From ac2049bc55aae6700fe125857836554c07649dfa Mon Sep 17 00:00:00 2001
From: John Bintz <john@coswellproductions.com>
Date: Tue, 17 May 2011 19:43:02 -0400
Subject: [PATCH] start this thing

---
 .gitignore                                  |    4 +
 Gemfile                                     |    4 +
 README.md                                   |    2 +
 Rakefile                                    |   15 +
 backbone-rails.gemspec                      |   21 +
 lib/backbone-rails.rb                       |    9 +
 lib/backbone-rails/generators.rb            |   19 +
 lib/backbone-rails/version.rb               |    3 +
 vendor/assets/javascripts/backbone-min.js   |   27 +
 vendor/assets/javascripts/backbone.js       | 1011 +++++++++++++++++++
 vendor/assets/javascripts/json2.js          |  480 +++++++++
 vendor/assets/javascripts/underscore-min.js |   26 +
 vendor/assets/javascripts/underscore.js     |  807 +++++++++++++++
 13 files changed, 2428 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Gemfile
 create mode 100644 README.md
 create mode 100644 Rakefile
 create mode 100644 backbone-rails.gemspec
 create mode 100644 lib/backbone-rails.rb
 create mode 100644 lib/backbone-rails/generators.rb
 create mode 100644 lib/backbone-rails/version.rb
 create mode 100644 vendor/assets/javascripts/backbone-min.js
 create mode 100644 vendor/assets/javascripts/backbone.js
 create mode 100644 vendor/assets/javascripts/json2.js
 create mode 100644 vendor/assets/javascripts/underscore-min.js
 create mode 100644 vendor/assets/javascripts/underscore.js

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4040c6c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+*.gem
+.bundle
+Gemfile.lock
+pkg/*
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..70b31e8
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,4 @@
+source "http://rubygems.org"
+
+# Specify your gem's dependencies in backbone-rails.gemspec
+gemspec
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..fabe1da
--- /dev/null
+++ b/README.md
@@ -0,0 +1,2 @@
+Easily get Backbone.js and its dependencies into your app. Maybe it can even work with Rails 3.1 soon?
+
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..8a367fc
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,15 @@
+require 'bundler'
+Bundler::GemHelper.install_tasks
+
+desc 'Update Backbone.js and Underscore.js'
+task :update_backbone do
+  [ 
+    'http://documentcloud.github.com/backbone/backbone.js', 
+    'http://documentcloud.github.com/backbone/backbone-min.js',
+    'http://documentcloud.github.com/underscore/underscore.js',
+    'http://documentcloud.github.com/underscore/underscore-min.js',
+    'https://github.com/douglascrockford/JSON-js/raw/master/json2.js'
+  ].each do |url|
+    system %{curl #{url} > vendor/assets/javascripts/#{File.split(url).last}}
+  end
+end
diff --git a/backbone-rails.gemspec b/backbone-rails.gemspec
new file mode 100644
index 0000000..c14c114
--- /dev/null
+++ b/backbone-rails.gemspec
@@ -0,0 +1,21 @@
+# -*- encoding: utf-8 -*-
+$:.push File.expand_path("../lib", __FILE__)
+require "backbone-rails/version"
+
+Gem::Specification.new do |s|
+  s.name        = "backbone-rails"
+  s.version     = BackboneRails::VERSION
+  s.platform    = Gem::Platform::RUBY
+  s.authors     = ["TODO: Write your name"]
+  s.email       = ["TODO: Write your email address"]
+  s.homepage    = ""
+  s.summary     = %q{TODO: Write a gem summary}
+  s.description = %q{TODO: Write a gem description}
+
+  s.rubyforge_project = "backbone-rails"
+
+  s.files         = `git ls-files`.split("\n")
+  s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
+  s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
+  s.require_paths = ["lib"]
+end
diff --git a/lib/backbone-rails.rb b/lib/backbone-rails.rb
new file mode 100644
index 0000000..4f31971
--- /dev/null
+++ b/lib/backbone-rails.rb
@@ -0,0 +1,9 @@
+require 'rails'
+
+module BackboneRails
+  class Railtie < ::Rails::Railtie
+    generators do
+      require 'backbone-rails/generators'
+    end
+  end
+end
diff --git a/lib/backbone-rails/generators.rb b/lib/backbone-rails/generators.rb
new file mode 100644
index 0000000..544a22f
--- /dev/null
+++ b/lib/backbone-rails/generators.rb
@@ -0,0 +1,19 @@
+require 'rails/generators'
+
+module Backbone
+  class Install < ::Rails::Generators::Base
+    JAVASCRIPTS = File.expand_path('../../../vendor/assets/javascripts', __FILE__)
+
+    def self.source_root
+      @source_root ||= JAVASCRIPTS
+    end
+
+    def copy_backbone
+      Dir[File.join(JAVASCRIPTS, '*.js')].each do |file|
+        file = File.split(file).last
+        copy_file file, "public/javascripts/#{file}"
+      end
+    end
+  end
+end
+
diff --git a/lib/backbone-rails/version.rb b/lib/backbone-rails/version.rb
new file mode 100644
index 0000000..3c3b7dd
--- /dev/null
+++ b/lib/backbone-rails/version.rb
@@ -0,0 +1,3 @@
+module BackboneRails
+  VERSION = "0.0.1"
+end
diff --git a/vendor/assets/javascripts/backbone-min.js b/vendor/assets/javascripts/backbone-min.js
new file mode 100644
index 0000000..161b401
--- /dev/null
+++ b/vendor/assets/javascripts/backbone-min.js
@@ -0,0 +1,27 @@
+// Backbone.js 0.3.3
+// (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+// Backbone may be freely distributed under the MIT license.
+// For all details and documentation:
+// http://documentcloud.github.com/backbone
+(function(){var e;e=typeof exports!=="undefined"?exports:this.Backbone={};e.VERSION="0.3.3";var f=this._;if(!f&&typeof require!=="undefined")f=require("underscore")._;var h=this.jQuery||this.Zepto;e.emulateHTTP=false;e.emulateJSON=false;e.Events={bind:function(a,b){this._callbacks||(this._callbacks={});(this._callbacks[a]||(this._callbacks[a]=[])).push(b);return this},unbind:function(a,b){var c;if(a){if(c=this._callbacks)if(b){c=c[a];if(!c)return this;for(var d=0,g=c.length;d<g;d++)if(b===c[d]){c.splice(d,
+1);break}}else c[a]=[]}else this._callbacks={};return this},trigger:function(a){var b,c,d,g;if(!(c=this._callbacks))return this;if(b=c[a]){d=0;for(g=b.length;d<g;d++)b[d].apply(this,Array.prototype.slice.call(arguments,1))}if(b=c.all){d=0;for(g=b.length;d<g;d++)b[d].apply(this,arguments)}return this}};e.Model=function(a,b){a||(a={});if(this.defaults)a=f.extend({},this.defaults,a);this.attributes={};this._escapedAttributes={};this.cid=f.uniqueId("c");this.set(a,{silent:true});this._previousAttributes=
+f.clone(this.attributes);if(b&&b.collection)this.collection=b.collection;this.initialize(a,b)};f.extend(e.Model.prototype,e.Events,{_previousAttributes:null,_changed:false,initialize:function(){},toJSON:function(){return f.clone(this.attributes)},get:function(a){return this.attributes[a]},escape:function(a){var b;if(b=this._escapedAttributes[a])return b;b=this.attributes[a];return this._escapedAttributes[a]=(b==null?"":b).replace(/&(?!\w+;)/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,
+"&quot;")},set:function(a,b){b||(b={});if(!a)return this;if(a.attributes)a=a.attributes;var c=this.attributes,d=this._escapedAttributes;if(!b.silent&&this.validate&&!this._performValidation(a,b))return false;if("id"in a)this.id=a.id;for(var g in a){var i=a[g];if(!f.isEqual(c[g],i)){c[g]=i;delete d[g];if(!b.silent){this._changed=true;this.trigger("change:"+g,this,i,b)}}}!b.silent&&this._changed&&this.change(b);return this},unset:function(a,b){b||(b={});var c={};c[a]=void 0;if(!b.silent&&this.validate&&
+!this._performValidation(c,b))return false;delete this.attributes[a];delete this._escapedAttributes[a];if(!b.silent){this._changed=true;this.trigger("change:"+a,this,void 0,b);this.change(b)}return this},clear:function(a){a||(a={});var b=this.attributes,c={};for(attr in b)c[attr]=void 0;if(!a.silent&&this.validate&&!this._performValidation(c,a))return false;this.attributes={};this._escapedAttributes={};if(!a.silent){this._changed=true;for(attr in b)this.trigger("change:"+attr,this,void 0,a);this.change(a)}return this},
+fetch:function(a){a||(a={});var b=this,c=j(a.error,b,a);(this.sync||e.sync)("read",this,function(d){if(!b.set(b.parse(d),a))return false;a.success&&a.success(b,d)},c);return this},save:function(a,b){b||(b={});if(a&&!this.set(a,b))return false;var c=this,d=j(b.error,c,b),g=this.isNew()?"create":"update";(this.sync||e.sync)(g,this,function(i){if(!c.set(c.parse(i),b))return false;b.success&&b.success(c,i)},d);return this},destroy:function(a){a||(a={});var b=this,c=j(a.error,b,a);(this.sync||e.sync)("delete",
+this,function(d){b.collection&&b.collection.remove(b);a.success&&a.success(b,d)},c);return this},url:function(){var a=k(this.collection);if(this.isNew())return a;return a+(a.charAt(a.length-1)=="/"?"":"/")+this.id},parse:function(a){return a},clone:function(){return new this.constructor(this)},isNew:function(){return!this.id},change:function(a){this.trigger("change",this,a);this._previousAttributes=f.clone(this.attributes);this._changed=false},hasChanged:function(a){if(a)return this._previousAttributes[a]!=
+this.attributes[a];return this._changed},changedAttributes:function(a){a||(a=this.attributes);var b=this._previousAttributes,c=false,d;for(d in a)if(!f.isEqual(b[d],a[d])){c=c||{};c[d]=a[d]}return c},previous:function(a){if(!a||!this._previousAttributes)return null;return this._previousAttributes[a]},previousAttributes:function(){return f.clone(this._previousAttributes)},_performValidation:function(a,b){var c=this.validate(a);if(c){b.error?b.error(this,c):this.trigger("error",this,c,b);return false}return true}});
+e.Collection=function(a,b){b||(b={});if(b.comparator){this.comparator=b.comparator;delete b.comparator}this._boundOnModelEvent=f.bind(this._onModelEvent,this);this._reset();a&&this.refresh(a,{silent:true});this.initialize(a,b)};f.extend(e.Collection.prototype,e.Events,{model:e.Model,initialize:function(){},toJSON:function(){return this.map(function(a){return a.toJSON()})},add:function(a,b){if(f.isArray(a))for(var c=0,d=a.length;c<d;c++)this._add(a[c],b);else this._add(a,b);return this},remove:function(a,
+b){if(f.isArray(a))for(var c=0,d=a.length;c<d;c++)this._remove(a[c],b);else this._remove(a,b);return this},get:function(a){if(a==null)return null;return this._byId[a.id!=null?a.id:a]},getByCid:function(a){return a&&this._byCid[a.cid||a]},at:function(a){return this.models[a]},sort:function(a){a||(a={});if(!this.comparator)throw Error("Cannot sort a set without a comparator");this.models=this.sortBy(this.comparator);a.silent||this.trigger("refresh",this,a);return this},pluck:function(a){return f.map(this.models,
+function(b){return b.get(a)})},refresh:function(a,b){a||(a=[]);b||(b={});this._reset();this.add(a,{silent:true});b.silent||this.trigger("refresh",this,b);return this},fetch:function(a){a||(a={});var b=this,c=j(a.error,b,a);(this.sync||e.sync)("read",this,function(d){b.refresh(b.parse(d));a.success&&a.success(b,d)},c);return this},create:function(a,b){var c=this;b||(b={});if(a instanceof e.Model)a.collection=c;else a=new this.model(a,{collection:c});return a.save(null,{success:function(d,g){c.add(d);
+b.success&&b.success(d,g)},error:b.error})},parse:function(a){return a},chain:function(){return f(this.models).chain()},_reset:function(){this.length=0;this.models=[];this._byId={};this._byCid={}},_add:function(a,b){b||(b={});a instanceof e.Model||(a=new this.model(a,{collection:this}));var c=this.getByCid(a);if(c)throw Error(["Can't add the same model to a set twice",c.id]);this._byId[a.id]=a;this._byCid[a.cid]=a;a.collection=this;this.models.splice(this.comparator?this.sortedIndex(a,this.comparator):
+this.length,0,a);a.bind("all",this._boundOnModelEvent);this.length++;b.silent||a.trigger("add",a,this,b);return a},_remove:function(a,b){b||(b={});a=this.getByCid(a)||this.get(a);if(!a)return null;delete this._byId[a.id];delete this._byCid[a.cid];delete a.collection;this.models.splice(this.indexOf(a),1);this.length--;b.silent||a.trigger("remove",a,this,b);a.unbind("all",this._boundOnModelEvent);return a},_onModelEvent:function(a,b){if(a==="change:id"){delete this._byId[b.previous("id")];this._byId[b.id]=
+b}this.trigger.apply(this,arguments)}});f.each(["forEach","each","map","reduce","reduceRight","find","detect","filter","select","reject","every","all","some","any","include","invoke","max","min","sortBy","sortedIndex","toArray","size","first","rest","last","without","indexOf","lastIndexOf","isEmpty"],function(a){e.Collection.prototype[a]=function(){return f[a].apply(f,[this.models].concat(f.toArray(arguments)))}});e.Controller=function(a){a||(a={});if(a.routes)this.routes=a.routes;this._bindRoutes();
+this.initialize(a)};var o=/:([\w\d]+)/g,p=/\*([\w\d]+)/g;f.extend(e.Controller.prototype,e.Events,{initialize:function(){},route:function(a,b,c){e.history||(e.history=new e.History);f.isRegExp(a)||(a=this._routeToRegExp(a));e.history.route(a,f.bind(function(d){d=this._extractParameters(a,d);c.apply(this,d);this.trigger.apply(this,["route:"+b].concat(d))},this))},saveLocation:function(a){e.history.saveLocation(a)},_bindRoutes:function(){if(this.routes)for(var a in this.routes){var b=this.routes[a];
+this.route(a,b,this[b])}},_routeToRegExp:function(a){a=a.replace(o,"([^/]*)").replace(p,"(.*?)");return RegExp("^"+a+"$")},_extractParameters:function(a,b){return a.exec(b).slice(1)}});e.History=function(){this.handlers=[];this.fragment=this.getFragment();f.bindAll(this,"checkUrl")};var l=/^#*/;f.extend(e.History.prototype,{interval:50,getFragment:function(a){return(a||window.location).hash.replace(l,"")},start:function(){var a=document.documentMode;if(a=h.browser.msie&&(!a||a<=7))this.iframe=h('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo("body")[0].contentWindow;
+"onhashchange"in window&&!a?h(window).bind("hashchange",this.checkUrl):setInterval(this.checkUrl,this.interval);return this.loadUrl()},route:function(a,b){this.handlers.push({route:a,callback:b})},checkUrl:function(){var a=this.getFragment();if(a==this.fragment&&this.iframe)a=this.getFragment(this.iframe.location);if(a==this.fragment||a==decodeURIComponent(this.fragment))return false;if(this.iframe)window.location.hash=this.iframe.location.hash=a;this.loadUrl()},loadUrl:function(){var a=this.fragment=
+this.getFragment();return f.any(this.handlers,function(b){if(b.route.test(a)){b.callback(a);return true}})},saveLocation:function(a){a=(a||"").replace(l,"");if(this.fragment!=a){window.location.hash=this.fragment=a;if(this.iframe&&a!=this.getFragment(this.iframe.location)){this.iframe.document.open().close();this.iframe.location.hash=a}}}});e.View=function(a){this._configure(a||{});this._ensureElement();this.delegateEvents();this.initialize(a)};var q=/^(\w+)\s*(.*)$/;f.extend(e.View.prototype,e.Events,
+{tagName:"div",$:function(a){return h(a,this.el)},initialize:function(){},render:function(){return this},remove:function(){h(this.el).remove();return this},make:function(a,b,c){a=document.createElement(a);b&&h(a).attr(b);c&&h(a).html(c);return a},delegateEvents:function(a){if(a||(a=this.events)){h(this.el).unbind();for(var b in a){var c=a[b],d=b.match(q),g=d[1];d=d[2];c=f.bind(this[c],this);d===""?h(this.el).bind(g,c):h(this.el).delegate(d,g,c)}}},_configure:function(a){if(this.options)a=f.extend({},
+this.options,a);if(a.model)this.model=a.model;if(a.collection)this.collection=a.collection;if(a.el)this.el=a.el;if(a.id)this.id=a.id;if(a.className)this.className=a.className;if(a.tagName)this.tagName=a.tagName;this.options=a},_ensureElement:function(){if(!this.el){var a={};if(this.id)a.id=this.id;if(this.className)a["class"]=this.className;this.el=this.make(this.tagName,a)}}});var m=function(a,b){var c=r(this,a,b);c.extend=m;return c};e.Model.extend=e.Collection.extend=e.Controller.extend=e.View.extend=
+m;var s={create:"POST",update:"PUT","delete":"DELETE",read:"GET"};e.sync=function(a,b,c,d){var g=s[a];a=a==="create"||a==="update"?JSON.stringify(b.toJSON()):null;b={url:k(b),type:g,contentType:"application/json",data:a,dataType:"json",processData:false,success:c,error:d};if(e.emulateJSON){b.contentType="application/x-www-form-urlencoded";b.processData=true;b.data=a?{model:a}:{}}if(e.emulateHTTP)if(g==="PUT"||g==="DELETE"){if(e.emulateJSON)b.data._method=g;b.type="POST";b.beforeSend=function(i){i.setRequestHeader("X-HTTP-Method-Override",
+g)}}h.ajax(b)};var n=function(){},r=function(a,b,c){var d;d=b&&b.hasOwnProperty("constructor")?b.constructor:function(){return a.apply(this,arguments)};n.prototype=a.prototype;d.prototype=new n;b&&f.extend(d.prototype,b);c&&f.extend(d,c);d.prototype.constructor=d;d.__super__=a.prototype;return d},k=function(a){if(!(a&&a.url))throw Error("A 'url' property or function must be specified");return f.isFunction(a.url)?a.url():a.url},j=function(a,b,c){return function(d){a?a(b,d):b.trigger("error",b,d,c)}}})();
diff --git a/vendor/assets/javascripts/backbone.js b/vendor/assets/javascripts/backbone.js
new file mode 100644
index 0000000..9f441cb
--- /dev/null
+++ b/vendor/assets/javascripts/backbone.js
@@ -0,0 +1,1011 @@
+//     Backbone.js 0.3.3
+//     (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+//     Backbone may be freely distributed under the MIT license.
+//     For all details and documentation:
+//     http://documentcloud.github.com/backbone
+
+(function(){
+
+  // Initial Setup
+  // -------------
+
+  // The top-level namespace. All public Backbone classes and modules will
+  // be attached to this. Exported for both CommonJS and the browser.
+  var Backbone;
+  if (typeof exports !== 'undefined') {
+    Backbone = exports;
+  } else {
+    Backbone = this.Backbone = {};
+  }
+
+  // Current version of the library. Keep in sync with `package.json`.
+  Backbone.VERSION = '0.3.3';
+
+  // Require Underscore, if we're on the server, and it's not already present.
+  var _ = this._;
+  if (!_ && (typeof require !== 'undefined')) _ = require("underscore")._;
+
+  // For Backbone's purposes, either jQuery or Zepto owns the `$` variable.
+  var $ = this.jQuery || this.Zepto;
+
+  // Turn on `emulateHTTP` to use support legacy HTTP servers. Setting this option will
+  // fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and set a
+  // `X-Http-Method-Override` header.
+  Backbone.emulateHTTP = false;
+
+  // Turn on `emulateJSON` to support legacy servers that can't deal with direct
+  // `application/json` requests ... will encode the body as
+  // `application/x-www-form-urlencoded` instead and will send the model in a
+  // form param named `model`.
+  Backbone.emulateJSON = false;
+
+  // Backbone.Events
+  // -----------------
+
+  // A module that can be mixed in to *any object* in order to provide it with
+  // custom events. You may `bind` or `unbind` a callback function to an event;
+  // `trigger`-ing an event fires all callbacks in succession.
+  //
+  //     var object = {};
+  //     _.extend(object, Backbone.Events);
+  //     object.bind('expand', function(){ alert('expanded'); });
+  //     object.trigger('expand');
+  //
+  Backbone.Events = {
+
+    // Bind an event, specified by a string name, `ev`, to a `callback` function.
+    // Passing `"all"` will bind the callback to all events fired.
+    bind : function(ev, callback) {
+      var calls = this._callbacks || (this._callbacks = {});
+      var list  = this._callbacks[ev] || (this._callbacks[ev] = []);
+      list.push(callback);
+      return this;
+    },
+
+    // Remove one or many callbacks. If `callback` is null, removes all
+    // callbacks for the event. If `ev` is null, removes all bound callbacks
+    // for all events.
+    unbind : function(ev, callback) {
+      var calls;
+      if (!ev) {
+        this._callbacks = {};
+      } else if (calls = this._callbacks) {
+        if (!callback) {
+          calls[ev] = [];
+        } else {
+          var list = calls[ev];
+          if (!list) return this;
+          for (var i = 0, l = list.length; i < l; i++) {
+            if (callback === list[i]) {
+              list.splice(i, 1);
+              break;
+            }
+          }
+        }
+      }
+      return this;
+    },
+
+    // Trigger an event, firing all bound callbacks. Callbacks are passed the
+    // same arguments as `trigger` is, apart from the event name.
+    // Listening for `"all"` passes the true event name as the first argument.
+    trigger : function(ev) {
+      var list, calls, i, l;
+      if (!(calls = this._callbacks)) return this;
+      if (list = calls[ev]) {
+        for (i = 0, l = list.length; i < l; i++) {
+          list[i].apply(this, Array.prototype.slice.call(arguments, 1));
+        }
+      }
+      if (list = calls['all']) {
+        for (i = 0, l = list.length; i < l; i++) {
+          list[i].apply(this, arguments);
+        }
+      }
+      return this;
+    }
+
+  };
+
+  // Backbone.Model
+  // --------------
+
+  // Create a new model, with defined attributes. A client id (`cid`)
+  // is automatically generated and assigned for you.
+  Backbone.Model = function(attributes, options) {
+    attributes || (attributes = {});
+    if (this.defaults) attributes = _.extend({}, this.defaults, attributes);
+    this.attributes = {};
+    this._escapedAttributes = {};
+    this.cid = _.uniqueId('c');
+    this.set(attributes, {silent : true});
+    this._previousAttributes = _.clone(this.attributes);
+    if (options && options.collection) this.collection = options.collection;
+    this.initialize(attributes, options);
+  };
+
+  // Attach all inheritable methods to the Model prototype.
+  _.extend(Backbone.Model.prototype, Backbone.Events, {
+
+    // A snapshot of the model's previous attributes, taken immediately
+    // after the last `"change"` event was fired.
+    _previousAttributes : null,
+
+    // Has the item been changed since the last `"change"` event?
+    _changed : false,
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize : function(){},
+
+    // Return a copy of the model's `attributes` object.
+    toJSON : function() {
+      return _.clone(this.attributes);
+    },
+
+    // Get the value of an attribute.
+    get : function(attr) {
+      return this.attributes[attr];
+    },
+
+    // Get the HTML-escaped value of an attribute.
+    escape : function(attr) {
+      var html;
+      if (html = this._escapedAttributes[attr]) return html;
+      var val = this.attributes[attr];
+      return this._escapedAttributes[attr] = escapeHTML(val == null ? '' : val);
+    },
+
+    // Set a hash of model attributes on the object, firing `"change"` unless you
+    // choose to silence it.
+    set : function(attrs, options) {
+
+      // Extract attributes and options.
+      options || (options = {});
+      if (!attrs) return this;
+      if (attrs.attributes) attrs = attrs.attributes;
+      var now = this.attributes, escaped = this._escapedAttributes;
+
+      // Run validation.
+      if (!options.silent && this.validate && !this._performValidation(attrs, options)) return false;
+
+      // Check for changes of `id`.
+      if ('id' in attrs) this.id = attrs.id;
+
+      // Update attributes.
+      for (var attr in attrs) {
+        var val = attrs[attr];
+        if (!_.isEqual(now[attr], val)) {
+          now[attr] = val;
+          delete escaped[attr];
+          if (!options.silent) {
+            this._changed = true;
+            this.trigger('change:' + attr, this, val, options);
+          }
+        }
+      }
+
+      // Fire the `"change"` event, if the model has been changed.
+      if (!options.silent && this._changed) this.change(options);
+      return this;
+    },
+
+    // Remove an attribute from the model, firing `"change"` unless you choose
+    // to silence it.
+    unset : function(attr, options) {
+      options || (options = {});
+      var value = this.attributes[attr];
+
+      // Run validation.
+      var validObj = {};
+      validObj[attr] = void 0;
+      if (!options.silent && this.validate && !this._performValidation(validObj, options)) return false;
+
+      // Remove the attribute.
+      delete this.attributes[attr];
+      delete this._escapedAttributes[attr];
+      if (!options.silent) {
+        this._changed = true;
+        this.trigger('change:' + attr, this, void 0, options);
+        this.change(options);
+      }
+      return this;
+    },
+
+    // Clear all attributes on the model, firing `"change"` unless you choose
+    // to silence it.
+    clear : function(options) {
+      options || (options = {});
+      var old = this.attributes;
+
+      // Run validation.
+      var validObj = {};
+      for (attr in old) validObj[attr] = void 0;
+      if (!options.silent && this.validate && !this._performValidation(validObj, options)) return false;
+
+      this.attributes = {};
+      this._escapedAttributes = {};
+      if (!options.silent) {
+        this._changed = true;
+        for (attr in old) {
+          this.trigger('change:' + attr, this, void 0, options);
+        }
+        this.change(options);
+      }
+      return this;
+    },
+
+    // Fetch the model from the server. If the server's representation of the
+    // model differs from its current attributes, they will be overriden,
+    // triggering a `"change"` event.
+    fetch : function(options) {
+      options || (options = {});
+      var model = this;
+      var success = function(resp) {
+        if (!model.set(model.parse(resp), options)) return false;
+        if (options.success) options.success(model, resp);
+      };
+      var error = wrapError(options.error, model, options);
+      (this.sync || Backbone.sync)('read', this, success, error);
+      return this;
+    },
+
+    // Set a hash of model attributes, and sync the model to the server.
+    // If the server returns an attributes hash that differs, the model's
+    // state will be `set` again.
+    save : function(attrs, options) {
+      options || (options = {});
+      if (attrs && !this.set(attrs, options)) return false;
+      var model = this;
+      var success = function(resp) {
+        if (!model.set(model.parse(resp), options)) return false;
+        if (options.success) options.success(model, resp);
+      };
+      var error = wrapError(options.error, model, options);
+      var method = this.isNew() ? 'create' : 'update';
+      (this.sync || Backbone.sync)(method, this, success, error);
+      return this;
+    },
+
+    // Destroy this model on the server. Upon success, the model is removed
+    // from its collection, if it has one.
+    destroy : function(options) {
+      options || (options = {});
+      var model = this;
+      var success = function(resp) {
+        if (model.collection) model.collection.remove(model);
+        if (options.success) options.success(model, resp);
+      };
+      var error = wrapError(options.error, model, options);
+      (this.sync || Backbone.sync)('delete', this, success, error);
+      return this;
+    },
+
+    // Default URL for the model's representation on the server -- if you're
+    // using Backbone's restful methods, override this to change the endpoint
+    // that will be called.
+    url : function() {
+      var base = getUrl(this.collection);
+      if (this.isNew()) return base;
+      return base + (base.charAt(base.length - 1) == '/' ? '' : '/') + this.id;
+    },
+
+    // **parse** converts a response into the hash of attributes to be `set` on
+    // the model. The default implementation is just to pass the response along.
+    parse : function(resp) {
+      return resp;
+    },
+
+    // Create a new model with identical attributes to this one.
+    clone : function() {
+      return new this.constructor(this);
+    },
+
+    // A model is new if it has never been saved to the server, and has a negative
+    // ID.
+    isNew : function() {
+      return !this.id;
+    },
+
+    // Call this method to manually fire a `change` event for this model.
+    // Calling this will cause all objects observing the model to update.
+    change : function(options) {
+      this.trigger('change', this, options);
+      this._previousAttributes = _.clone(this.attributes);
+      this._changed = false;
+    },
+
+    // Determine if the model has changed since the last `"change"` event.
+    // If you specify an attribute name, determine if that attribute has changed.
+    hasChanged : function(attr) {
+      if (attr) return this._previousAttributes[attr] != this.attributes[attr];
+      return this._changed;
+    },
+
+    // Return an object containing all the attributes that have changed, or false
+    // if there are no changed attributes. Useful for determining what parts of a
+    // view need to be updated and/or what attributes need to be persisted to
+    // the server.
+    changedAttributes : function(now) {
+      now || (now = this.attributes);
+      var old = this._previousAttributes;
+      var changed = false;
+      for (var attr in now) {
+        if (!_.isEqual(old[attr], now[attr])) {
+          changed = changed || {};
+          changed[attr] = now[attr];
+        }
+      }
+      return changed;
+    },
+
+    // Get the previous value of an attribute, recorded at the time the last
+    // `"change"` event was fired.
+    previous : function(attr) {
+      if (!attr || !this._previousAttributes) return null;
+      return this._previousAttributes[attr];
+    },
+
+    // Get all of the attributes of the model at the time of the previous
+    // `"change"` event.
+    previousAttributes : function() {
+      return _.clone(this._previousAttributes);
+    },
+
+    // Run validation against a set of incoming attributes, returning `true`
+    // if all is well. If a specific `error` callback has been passed,
+    // call that instead of firing the general `"error"` event.
+    _performValidation : function(attrs, options) {
+      var error = this.validate(attrs);
+      if (error) {
+        if (options.error) {
+          options.error(this, error);
+        } else {
+          this.trigger('error', this, error, options);
+        }
+        return false;
+      }
+      return true;
+    }
+
+  });
+
+  // Backbone.Collection
+  // -------------------
+
+  // Provides a standard collection class for our sets of models, ordered
+  // or unordered. If a `comparator` is specified, the Collection will maintain
+  // its models in sort order, as they're added and removed.
+  Backbone.Collection = function(models, options) {
+    options || (options = {});
+    if (options.comparator) {
+      this.comparator = options.comparator;
+      delete options.comparator;
+    }
+    this._boundOnModelEvent = _.bind(this._onModelEvent, this);
+    this._reset();
+    if (models) this.refresh(models, {silent: true});
+    this.initialize(models, options);
+  };
+
+  // Define the Collection's inheritable methods.
+  _.extend(Backbone.Collection.prototype, Backbone.Events, {
+
+    // The default model for a collection is just a **Backbone.Model**.
+    // This should be overridden in most cases.
+    model : Backbone.Model,
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize : function(){},
+
+    // The JSON representation of a Collection is an array of the
+    // models' attributes.
+    toJSON : function() {
+      return this.map(function(model){ return model.toJSON(); });
+    },
+
+    // Add a model, or list of models to the set. Pass **silent** to avoid
+    // firing the `added` event for every new model.
+    add : function(models, options) {
+      if (_.isArray(models)) {
+        for (var i = 0, l = models.length; i < l; i++) {
+          this._add(models[i], options);
+        }
+      } else {
+        this._add(models, options);
+      }
+      return this;
+    },
+
+    // Remove a model, or a list of models from the set. Pass silent to avoid
+    // firing the `removed` event for every model removed.
+    remove : function(models, options) {
+      if (_.isArray(models)) {
+        for (var i = 0, l = models.length; i < l; i++) {
+          this._remove(models[i], options);
+        }
+      } else {
+        this._remove(models, options);
+      }
+      return this;
+    },
+
+    // Get a model from the set by id.
+    get : function(id) {
+      if (id == null) return null;
+      return this._byId[id.id != null ? id.id : id];
+    },
+
+    // Get a model from the set by client id.
+    getByCid : function(cid) {
+      return cid && this._byCid[cid.cid || cid];
+    },
+
+    // Get the model at the given index.
+    at: function(index) {
+      return this.models[index];
+    },
+
+    // Force the collection to re-sort itself. You don't need to call this under normal
+    // circumstances, as the set will maintain sort order as each item is added.
+    sort : function(options) {
+      options || (options = {});
+      if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
+      this.models = this.sortBy(this.comparator);
+      if (!options.silent) this.trigger('refresh', this, options);
+      return this;
+    },
+
+    // Pluck an attribute from each model in the collection.
+    pluck : function(attr) {
+      return _.map(this.models, function(model){ return model.get(attr); });
+    },
+
+    // When you have more items than you want to add or remove individually,
+    // you can refresh the entire set with a new list of models, without firing
+    // any `added` or `removed` events. Fires `refresh` when finished.
+    refresh : function(models, options) {
+      models  || (models = []);
+      options || (options = {});
+      this._reset();
+      this.add(models, {silent: true});
+      if (!options.silent) this.trigger('refresh', this, options);
+      return this;
+    },
+
+    // Fetch the default set of models for this collection, refreshing the
+    // collection when they arrive.
+    fetch : function(options) {
+      options || (options = {});
+      var collection = this;
+      var success = function(resp) {
+        collection.refresh(collection.parse(resp));
+        if (options.success) options.success(collection, resp);
+      };
+      var error = wrapError(options.error, collection, options);
+      (this.sync || Backbone.sync)('read', this, success, error);
+      return this;
+    },
+
+    // Create a new instance of a model in this collection. After the model
+    // has been created on the server, it will be added to the collection.
+    create : function(model, options) {
+      var coll = this;
+      options || (options = {});
+      if (!(model instanceof Backbone.Model)) {
+        model = new this.model(model, {collection: coll});
+      } else {
+        model.collection = coll;
+      }
+      var success = function(nextModel, resp) {
+        coll.add(nextModel);
+        if (options.success) options.success(nextModel, resp);
+      };
+      return model.save(null, {success : success, error : options.error});
+    },
+
+    // **parse** converts a response into a list of models to be added to the
+    // collection. The default implementation is just to pass it through.
+    parse : function(resp) {
+      return resp;
+    },
+
+    // Proxy to _'s chain. Can't be proxied the same way the rest of the
+    // underscore methods are proxied because it relies on the underscore
+    // constructor.
+    chain: function () {
+      return _(this.models).chain();
+    },
+
+    // Reset all internal state. Called when the collection is refreshed.
+    _reset : function(options) {
+      this.length = 0;
+      this.models = [];
+      this._byId  = {};
+      this._byCid = {};
+    },
+
+    // Internal implementation of adding a single model to the set, updating
+    // hash indexes for `id` and `cid` lookups.
+    _add : function(model, options) {
+      options || (options = {});
+      if (!(model instanceof Backbone.Model)) {
+        model = new this.model(model, {collection: this});
+      }
+      var already = this.getByCid(model);
+      if (already) throw new Error(["Can't add the same model to a set twice", already.id]);
+      this._byId[model.id] = model;
+      this._byCid[model.cid] = model;
+      model.collection = this;
+      var index = this.comparator ? this.sortedIndex(model, this.comparator) : this.length;
+      this.models.splice(index, 0, model);
+      model.bind('all', this._boundOnModelEvent);
+      this.length++;
+      if (!options.silent) model.trigger('add', model, this, options);
+      return model;
+    },
+
+    // Internal implementation of removing a single model from the set, updating
+    // hash indexes for `id` and `cid` lookups.
+    _remove : function(model, options) {
+      options || (options = {});
+      model = this.getByCid(model) || this.get(model);
+      if (!model) return null;
+      delete this._byId[model.id];
+      delete this._byCid[model.cid];
+      delete model.collection;
+      this.models.splice(this.indexOf(model), 1);
+      this.length--;
+      if (!options.silent) model.trigger('remove', model, this, options);
+      model.unbind('all', this._boundOnModelEvent);
+      return model;
+    },
+
+    // Internal method called every time a model in the set fires an event.
+    // Sets need to update their indexes when models change ids. All other
+    // events simply proxy through.
+    _onModelEvent : function(ev, model) {
+      if (ev === 'change:id') {
+        delete this._byId[model.previous('id')];
+        this._byId[model.id] = model;
+      }
+      this.trigger.apply(this, arguments);
+    }
+
+  });
+
+  // Underscore methods that we want to implement on the Collection.
+  var methods = ['forEach', 'each', 'map', 'reduce', 'reduceRight', 'find', 'detect',
+    'filter', 'select', 'reject', 'every', 'all', 'some', 'any', 'include',
+    'invoke', 'max', 'min', 'sortBy', 'sortedIndex', 'toArray', 'size',
+    'first', 'rest', 'last', 'without', 'indexOf', 'lastIndexOf', 'isEmpty'];
+
+  // Mix in each Underscore method as a proxy to `Collection#models`.
+  _.each(methods, function(method) {
+    Backbone.Collection.prototype[method] = function() {
+      return _[method].apply(_, [this.models].concat(_.toArray(arguments)));
+    };
+  });
+
+  // Backbone.Controller
+  // -------------------
+
+  // Controllers map faux-URLs to actions, and fire events when routes are
+  // matched. Creating a new one sets its `routes` hash, if not set statically.
+  Backbone.Controller = function(options) {
+    options || (options = {});
+    if (options.routes) this.routes = options.routes;
+    this._bindRoutes();
+    this.initialize(options);
+  };
+
+  // Cached regular expressions for matching named param parts and splatted
+  // parts of route strings.
+  var namedParam = /:([\w\d]+)/g;
+  var splatParam = /\*([\w\d]+)/g;
+
+  // Set up all inheritable **Backbone.Controller** properties and methods.
+  _.extend(Backbone.Controller.prototype, Backbone.Events, {
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize : function(){},
+
+    // Manually bind a single named route to a callback. For example:
+    //
+    //     this.route('search/:query/p:num', 'search', function(query, num) {
+    //       ...
+    //     });
+    //
+    route : function(route, name, callback) {
+      Backbone.history || (Backbone.history = new Backbone.History);
+      if (!_.isRegExp(route)) route = this._routeToRegExp(route);
+      Backbone.history.route(route, _.bind(function(fragment) {
+        var args = this._extractParameters(route, fragment);
+        callback.apply(this, args);
+        this.trigger.apply(this, ['route:' + name].concat(args));
+      }, this));
+    },
+
+    // Simple proxy to `Backbone.history` to save a fragment into the history,
+    // without triggering routes.
+    saveLocation : function(fragment) {
+      Backbone.history.saveLocation(fragment);
+    },
+
+    // Bind all defined routes to `Backbone.history`.
+    _bindRoutes : function() {
+      if (!this.routes) return;
+      for (var route in this.routes) {
+        var name = this.routes[route];
+        this.route(route, name, this[name]);
+      }
+    },
+
+    // Convert a route string into a regular expression, suitable for matching
+    // against the current location fragment.
+    _routeToRegExp : function(route) {
+      route = route.replace(namedParam, "([^\/]*)").replace(splatParam, "(.*?)");
+      return new RegExp('^' + route + '$');
+    },
+
+    // Given a route, and a URL fragment that it matches, return the array of
+    // extracted parameters.
+    _extractParameters : function(route, fragment) {
+      return route.exec(fragment).slice(1);
+    }
+
+  });
+
+  // Backbone.History
+  // ----------------
+
+  // Handles cross-browser history management, based on URL hashes. If the
+  // browser does not support `onhashchange`, falls back to polling.
+  Backbone.History = function() {
+    this.handlers = [];
+    this.fragment = this.getFragment();
+    _.bindAll(this, 'checkUrl');
+  };
+
+  // Cached regex for cleaning hashes.
+  var hashStrip = /^#*/;
+
+  // Set up all inheritable **Backbone.History** properties and methods.
+  _.extend(Backbone.History.prototype, {
+
+    // The default interval to poll for hash changes, if necessary, is
+    // twenty times a second.
+    interval: 50,
+
+    // Get the cross-browser normalized URL fragment.
+    getFragment : function(loc) {
+      return (loc || window.location).hash.replace(hashStrip, '');
+    },
+
+    // Start the hash change handling, returning `true` if the current URL matches
+    // an existing route, and `false` otherwise.
+    start : function() {
+      var docMode = document.documentMode;
+      var oldIE = ($.browser.msie && (!docMode || docMode <= 7));
+      if (oldIE) {
+        this.iframe = $('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo('body')[0].contentWindow;
+      }
+      if ('onhashchange' in window && !oldIE) {
+        $(window).bind('hashchange', this.checkUrl);
+      } else {
+        setInterval(this.checkUrl, this.interval);
+      }
+      return this.loadUrl();
+    },
+
+    // Add a route to be tested when the hash changes. Routes are matched in the
+    // order they are added.
+    route : function(route, callback) {
+      this.handlers.push({route : route, callback : callback});
+    },
+
+    // Checks the current URL to see if it has changed, and if it has,
+    // calls `loadUrl`, normalizing across the hidden iframe.
+    checkUrl : function() {
+      var current = this.getFragment();
+      if (current == this.fragment && this.iframe) {
+        current = this.getFragment(this.iframe.location);
+      }
+      if (current == this.fragment ||
+          current == decodeURIComponent(this.fragment)) return false;
+      if (this.iframe) {
+        window.location.hash = this.iframe.location.hash = current;
+      }
+      this.loadUrl();
+    },
+
+    // Attempt to load the current URL fragment. If a route succeeds with a
+    // match, returns `true`. If no defined routes matches the fragment,
+    // returns `false`.
+    loadUrl : function() {
+      var fragment = this.fragment = this.getFragment();
+      var matched = _.any(this.handlers, function(handler) {
+        if (handler.route.test(fragment)) {
+          handler.callback(fragment);
+          return true;
+        }
+      });
+      return matched;
+    },
+
+    // Save a fragment into the hash history. You are responsible for properly
+    // URL-encoding the fragment in advance. This does not trigger
+    // a `hashchange` event.
+    saveLocation : function(fragment) {
+      fragment = (fragment || '').replace(hashStrip, '');
+      if (this.fragment == fragment) return;
+      window.location.hash = this.fragment = fragment;
+      if (this.iframe && (fragment != this.getFragment(this.iframe.location))) {
+        this.iframe.document.open().close();
+        this.iframe.location.hash = fragment;
+      }
+    }
+
+  });
+
+  // Backbone.View
+  // -------------
+
+  // Creating a Backbone.View creates its initial element outside of the DOM,
+  // if an existing element is not provided...
+  Backbone.View = function(options) {
+    this._configure(options || {});
+    this._ensureElement();
+    this.delegateEvents();
+    this.initialize(options);
+  };
+
+  // Element lookup, scoped to DOM elements within the current view.
+  // This should be prefered to global lookups, if you're dealing with
+  // a specific view.
+  var selectorDelegate = function(selector) {
+    return $(selector, this.el);
+  };
+
+  // Cached regex to split keys for `delegate`.
+  var eventSplitter = /^(\w+)\s*(.*)$/;
+
+  // Set up all inheritable **Backbone.View** properties and methods.
+  _.extend(Backbone.View.prototype, Backbone.Events, {
+
+    // The default `tagName` of a View's element is `"div"`.
+    tagName : 'div',
+
+    // Attach the `selectorDelegate` function as the `$` property.
+    $       : selectorDelegate,
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize : function(){},
+
+    // **render** is the core function that your view should override, in order
+    // to populate its element (`this.el`), with the appropriate HTML. The
+    // convention is for **render** to always return `this`.
+    render : function() {
+      return this;
+    },
+
+    // Remove this view from the DOM. Note that the view isn't present in the
+    // DOM by default, so calling this method may be a no-op.
+    remove : function() {
+      $(this.el).remove();
+      return this;
+    },
+
+    // For small amounts of DOM Elements, where a full-blown template isn't
+    // needed, use **make** to manufacture elements, one at a time.
+    //
+    //     var el = this.make('li', {'class': 'row'}, this.model.escape('title'));
+    //
+    make : function(tagName, attributes, content) {
+      var el = document.createElement(tagName);
+      if (attributes) $(el).attr(attributes);
+      if (content) $(el).html(content);
+      return el;
+    },
+
+    // Set callbacks, where `this.callbacks` is a hash of
+    //
+    // *{"event selector": "callback"}*
+    //
+    //     {
+    //       'mousedown .title':  'edit',
+    //       'click .button':     'save'
+    //     }
+    //
+    // pairs. Callbacks will be bound to the view, with `this` set properly.
+    // Uses event delegation for efficiency.
+    // Omitting the selector binds the event to `this.el`.
+    // This only works for delegate-able events: not `focus`, `blur`, and
+    // not `change`, `submit`, and `reset` in Internet Explorer.
+    delegateEvents : function(events) {
+      if (!(events || (events = this.events))) return;
+      $(this.el).unbind();
+      for (var key in events) {
+        var methodName = events[key];
+        var match = key.match(eventSplitter);
+        var eventName = match[1], selector = match[2];
+        var method = _.bind(this[methodName], this);
+        if (selector === '') {
+          $(this.el).bind(eventName, method);
+        } else {
+          $(this.el).delegate(selector, eventName, method);
+        }
+      }
+    },
+
+    // Performs the initial configuration of a View with a set of options.
+    // Keys with special meaning *(model, collection, id, className)*, are
+    // attached directly to the view.
+    _configure : function(options) {
+      if (this.options) options = _.extend({}, this.options, options);
+      if (options.model)      this.model      = options.model;
+      if (options.collection) this.collection = options.collection;
+      if (options.el)         this.el         = options.el;
+      if (options.id)         this.id         = options.id;
+      if (options.className)  this.className  = options.className;
+      if (options.tagName)    this.tagName    = options.tagName;
+      this.options = options;
+    },
+
+    // Ensure that the View has a DOM element to render into.
+    _ensureElement : function() {
+      if (this.el) return;
+      var attrs = {};
+      if (this.id) attrs.id = this.id;
+      if (this.className) attrs["class"] = this.className;
+      this.el = this.make(this.tagName, attrs);
+    }
+
+  });
+
+  // The self-propagating extend function that Backbone classes use.
+  var extend = function (protoProps, classProps) {
+    var child = inherits(this, protoProps, classProps);
+    child.extend = extend;
+    return child;
+  };
+
+  // Set up inheritance for the model, collection, and view.
+  Backbone.Model.extend = Backbone.Collection.extend =
+    Backbone.Controller.extend = Backbone.View.extend = extend;
+
+  // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
+  var methodMap = {
+    'create': 'POST',
+    'update': 'PUT',
+    'delete': 'DELETE',
+    'read'  : 'GET'
+  };
+
+  // Backbone.sync
+  // -------------
+
+  // Override this function to change the manner in which Backbone persists
+  // models to the server. You will be passed the type of request, and the
+  // model in question. By default, uses makes a RESTful Ajax request
+  // to the model's `url()`. Some possible customizations could be:
+  //
+  // * Use `setTimeout` to batch rapid-fire updates into a single request.
+  // * Send up the models as XML instead of JSON.
+  // * Persist models via WebSockets instead of Ajax.
+  //
+  // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
+  // as `POST`, with a `_method` parameter containing the true HTTP method,
+  // as well as all requests with the body as `application/x-www-form-urlencoded` instead of
+  // `application/json` with the model in a param named `model`.
+  // Useful when interfacing with server-side languages like **PHP** that make
+  // it difficult to read the body of `PUT` requests.
+  Backbone.sync = function(method, model, success, error) {
+    var type = methodMap[method];
+    var modelJSON = (method === 'create' || method === 'update') ?
+                    JSON.stringify(model.toJSON()) : null;
+
+    // Default JSON-request options.
+    var params = {
+      url:          getUrl(model),
+      type:         type,
+      contentType:  'application/json',
+      data:         modelJSON,
+      dataType:     'json',
+      processData:  false,
+      success:      success,
+      error:        error
+    };
+
+    // For older servers, emulate JSON by encoding the request into an HTML-form.
+    if (Backbone.emulateJSON) {
+      params.contentType = 'application/x-www-form-urlencoded';
+      params.processData = true;
+      params.data        = modelJSON ? {model : modelJSON} : {};
+    }
+
+    // For older servers, emulate HTTP by mimicking the HTTP method with `_method`
+    // And an `X-HTTP-Method-Override` header.
+    if (Backbone.emulateHTTP) {
+      if (type === 'PUT' || type === 'DELETE') {
+        if (Backbone.emulateJSON) params.data._method = type;
+        params.type = 'POST';
+        params.beforeSend = function(xhr) {
+          xhr.setRequestHeader("X-HTTP-Method-Override", type);
+        };
+      }
+    }
+
+    // Make the request.
+    $.ajax(params);
+  };
+
+  // Helpers
+  // -------
+
+  // Shared empty constructor function to aid in prototype-chain creation.
+  var ctor = function(){};
+
+  // Helper function to correctly set up the prototype chain, for subclasses.
+  // Similar to `goog.inherits`, but uses a hash of prototype properties and
+  // class properties to be extended.
+  var inherits = function(parent, protoProps, staticProps) {
+    var child;
+
+    // The constructor function for the new subclass is either defined by you
+    // (the "constructor" property in your `extend` definition), or defaulted
+    // by us to simply call `super()`.
+    if (protoProps && protoProps.hasOwnProperty('constructor')) {
+      child = protoProps.constructor;
+    } else {
+      child = function(){ return parent.apply(this, arguments); };
+    }
+
+    // Set the prototype chain to inherit from `parent`, without calling
+    // `parent`'s constructor function.
+    ctor.prototype = parent.prototype;
+    child.prototype = new ctor();
+
+    // Add prototype properties (instance properties) to the subclass,
+    // if supplied.
+    if (protoProps) _.extend(child.prototype, protoProps);
+
+    // Add static properties to the constructor function, if supplied.
+    if (staticProps) _.extend(child, staticProps);
+
+    // Correctly set child's `prototype.constructor`, for `instanceof`.
+    child.prototype.constructor = child;
+
+    // Set a convenience property in case the parent's prototype is needed later.
+    child.__super__ = parent.prototype;
+
+    return child;
+  };
+
+  // Helper function to get a URL from a Model or Collection as a property
+  // or as a function.
+  var getUrl = function(object) {
+    if (!(object && object.url)) throw new Error("A 'url' property or function must be specified");
+    return _.isFunction(object.url) ? object.url() : object.url;
+  };
+
+  // Wrap an optional error callback with a fallback error event.
+  var wrapError = function(onError, model, options) {
+    return function(resp) {
+      if (onError) {
+        onError(model, resp);
+      } else {
+        model.trigger('error', model, resp, options);
+      }
+    };
+  };
+
+  // Helper function to escape a string for HTML rendering.
+  var escapeHTML = function(string) {
+    return string.replace(/&(?!\w+;)/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
+  };
+
+})();
diff --git a/vendor/assets/javascripts/json2.js b/vendor/assets/javascripts/json2.js
new file mode 100644
index 0000000..b4c02d3
--- /dev/null
+++ b/vendor/assets/javascripts/json2.js
@@ -0,0 +1,480 @@
+/*
+    http://www.JSON.org/json2.js
+    2011-02-23
+
+    Public Domain.
+
+    NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
+
+    See http://www.JSON.org/js.html
+
+
+    This code should be minified before deployment.
+    See http://javascript.crockford.com/jsmin.html
+
+    USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
+    NOT CONTROL.
+
+
+    This file creates a global JSON object containing two methods: stringify
+    and parse.
+
+        JSON.stringify(value, replacer, space)
+            value       any JavaScript value, usually an object or array.
+
+            replacer    an optional parameter that determines how object
+                        values are stringified for objects. It can be a
+                        function or an array of strings.
+
+            space       an optional parameter that specifies the indentation
+                        of nested structures. If it is omitted, the text will
+                        be packed without extra whitespace. If it is a number,
+                        it will specify the number of spaces to indent at each
+                        level. If it is a string (such as '\t' or '&nbsp;'),
+                        it contains the characters used to indent at each level.
+
+            This method produces a JSON text from a JavaScript value.
+
+            When an object value is found, if the object contains a toJSON
+            method, its toJSON method will be called and the result will be
+            stringified. A toJSON method does not serialize: it returns the
+            value represented by the name/value pair that should be serialized,
+            or undefined if nothing should be serialized. The toJSON method
+            will be passed the key associated with the value, and this will be
+            bound to the value
+
+            For example, this would serialize Dates as ISO strings.
+
+                Date.prototype.toJSON = function (key) {
+                    function f(n) {
+                        // Format integers to have at least two digits.
+                        return n < 10 ? '0' + n : n;
+                    }
+
+                    return this.getUTCFullYear()   + '-' +
+                         f(this.getUTCMonth() + 1) + '-' +
+                         f(this.getUTCDate())      + 'T' +
+                         f(this.getUTCHours())     + ':' +
+                         f(this.getUTCMinutes())   + ':' +
+                         f(this.getUTCSeconds())   + 'Z';
+                };
+
+            You can provide an optional replacer method. It will be passed the
+            key and value of each member, with this bound to the containing
+            object. The value that is returned from your method will be
+            serialized. If your method returns undefined, then the member will
+            be excluded from the serialization.
+
+            If the replacer parameter is an array of strings, then it will be
+            used to select the members to be serialized. It filters the results
+            such that only members with keys listed in the replacer array are
+            stringified.
+
+            Values that do not have JSON representations, such as undefined or
+            functions, will not be serialized. Such values in objects will be
+            dropped; in arrays they will be replaced with null. You can use
+            a replacer function to replace those with JSON values.
+            JSON.stringify(undefined) returns undefined.
+
+            The optional space parameter produces a stringification of the
+            value that is filled with line breaks and indentation to make it
+            easier to read.
+
+            If the space parameter is a non-empty string, then that string will
+            be used for indentation. If the space parameter is a number, then
+            the indentation will be that many spaces.
+
+            Example:
+
+            text = JSON.stringify(['e', {pluribus: 'unum'}]);
+            // text is '["e",{"pluribus":"unum"}]'
+
+
+            text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
+            // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
+
+            text = JSON.stringify([new Date()], function (key, value) {
+                return this[key] instanceof Date ?
+                    'Date(' + this[key] + ')' : value;
+            });
+            // text is '["Date(---current time---)"]'
+
+
+        JSON.parse(text, reviver)
+            This method parses a JSON text to produce an object or array.
+            It can throw a SyntaxError exception.
+
+            The optional reviver parameter is a function that can filter and
+            transform the results. It receives each of the keys and values,
+            and its return value is used instead of the original value.
+            If it returns what it received, then the structure is not modified.
+            If it returns undefined then the member is deleted.
+
+            Example:
+
+            // Parse the text. Values that look like ISO date strings will
+            // be converted to Date objects.
+
+            myData = JSON.parse(text, function (key, value) {
+                var a;
+                if (typeof value === 'string') {
+                    a =
+/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
+                    if (a) {
+                        return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
+                            +a[5], +a[6]));
+                    }
+                }
+                return value;
+            });
+
+            myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
+                var d;
+                if (typeof value === 'string' &&
+                        value.slice(0, 5) === 'Date(' &&
+                        value.slice(-1) === ')') {
+                    d = new Date(value.slice(5, -1));
+                    if (d) {
+                        return d;
+                    }
+                }
+                return value;
+            });
+
+
+    This is a reference implementation. You are free to copy, modify, or
+    redistribute.
+*/
+
+/*jslint evil: true, strict: false, regexp: false */
+
+/*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,
+    call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
+    getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
+    lastIndex, length, parse, prototype, push, replace, slice, stringify,
+    test, toJSON, toString, valueOf
+*/
+
+
+// Create a JSON object only if one does not already exist. We create the
+// methods in a closure to avoid creating global variables.
+
+var JSON;
+if (!JSON) {
+    JSON = {};
+}
+
+(function () {
+    "use strict";
+
+    function f(n) {
+        // Format integers to have at least two digits.
+        return n < 10 ? '0' + n : n;
+    }
+
+    if (typeof Date.prototype.toJSON !== 'function') {
+
+        Date.prototype.toJSON = function (key) {
+
+            return isFinite(this.valueOf()) ?
+                this.getUTCFullYear()     + '-' +
+                f(this.getUTCMonth() + 1) + '-' +
+                f(this.getUTCDate())      + 'T' +
+                f(this.getUTCHours())     + ':' +
+                f(this.getUTCMinutes())   + ':' +
+                f(this.getUTCSeconds())   + 'Z' : null;
+        };
+
+        String.prototype.toJSON      =
+            Number.prototype.toJSON  =
+            Boolean.prototype.toJSON = function (key) {
+                return this.valueOf();
+            };
+    }
+
+    var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
+        escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
+        gap,
+        indent,
+        meta = {    // table of character substitutions
+            '\b': '\\b',
+            '\t': '\\t',
+            '\n': '\\n',
+            '\f': '\\f',
+            '\r': '\\r',
+            '"' : '\\"',
+            '\\': '\\\\'
+        },
+        rep;
+
+
+    function quote(string) {
+
+// If the string contains no control characters, no quote characters, and no
+// backslash characters, then we can safely slap some quotes around it.
+// Otherwise we must also replace the offending characters with safe escape
+// sequences.
+
+        escapable.lastIndex = 0;
+        return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
+            var c = meta[a];
+            return typeof c === 'string' ? c :
+                '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
+        }) + '"' : '"' + string + '"';
+    }
+
+
+    function str(key, holder) {
+
+// Produce a string from holder[key].
+
+        var i,          // The loop counter.
+            k,          // The member key.
+            v,          // The member value.
+            length,
+            mind = gap,
+            partial,
+            value = holder[key];
+
+// If the value has a toJSON method, call it to obtain a replacement value.
+
+        if (value && typeof value === 'object' &&
+                typeof value.toJSON === 'function') {
+            value = value.toJSON(key);
+        }
+
+// If we were called with a replacer function, then call the replacer to
+// obtain a replacement value.
+
+        if (typeof rep === 'function') {
+            value = rep.call(holder, key, value);
+        }
+
+// What happens next depends on the value's type.
+
+        switch (typeof value) {
+        case 'string':
+            return quote(value);
+
+        case 'number':
+
+// JSON numbers must be finite. Encode non-finite numbers as null.
+
+            return isFinite(value) ? String(value) : 'null';
+
+        case 'boolean':
+        case 'null':
+
+// If the value is a boolean or null, convert it to a string. Note:
+// typeof null does not produce 'null'. The case is included here in
+// the remote chance that this gets fixed someday.
+
+            return String(value);
+
+// If the type is 'object', we might be dealing with an object or an array or
+// null.
+
+        case 'object':
+
+// Due to a specification blunder in ECMAScript, typeof null is 'object',
+// so watch out for that case.
+
+            if (!value) {
+                return 'null';
+            }
+
+// Make an array to hold the partial results of stringifying this object value.
+
+            gap += indent;
+            partial = [];
+
+// Is the value an array?
+
+            if (Object.prototype.toString.apply(value) === '[object Array]') {
+
+// The value is an array. Stringify every element. Use null as a placeholder
+// for non-JSON values.
+
+                length = value.length;
+                for (i = 0; i < length; i += 1) {
+                    partial[i] = str(i, value) || 'null';
+                }
+
+// Join all of the elements together, separated with commas, and wrap them in
+// brackets.
+
+                v = partial.length === 0 ? '[]' : gap ?
+                    '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' :
+                    '[' + partial.join(',') + ']';
+                gap = mind;
+                return v;
+            }
+
+// If the replacer is an array, use it to select the members to be stringified.
+
+            if (rep && typeof rep === 'object') {
+                length = rep.length;
+                for (i = 0; i < length; i += 1) {
+                    if (typeof rep[i] === 'string') {
+                        k = rep[i];
+                        v = str(k, value);
+                        if (v) {
+                            partial.push(quote(k) + (gap ? ': ' : ':') + v);
+                        }
+                    }
+                }
+            } else {
+
+// Otherwise, iterate through all of the keys in the object.
+
+                for (k in value) {
+                    if (Object.prototype.hasOwnProperty.call(value, k)) {
+                        v = str(k, value);
+                        if (v) {
+                            partial.push(quote(k) + (gap ? ': ' : ':') + v);
+                        }
+                    }
+                }
+            }
+
+// Join all of the member texts together, separated with commas,
+// and wrap them in braces.
+
+            v = partial.length === 0 ? '{}' : gap ?
+                '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' :
+                '{' + partial.join(',') + '}';
+            gap = mind;
+            return v;
+        }
+    }
+
+// If the JSON object does not yet have a stringify method, give it one.
+
+    if (typeof JSON.stringify !== 'function') {
+        JSON.stringify = function (value, replacer, space) {
+
+// The stringify method takes a value and an optional replacer, and an optional
+// space parameter, and returns a JSON text. The replacer can be a function
+// that can replace values, or an array of strings that will select the keys.
+// A default replacer method can be provided. Use of the space parameter can
+// produce text that is more easily readable.
+
+            var i;
+            gap = '';
+            indent = '';
+
+// If the space parameter is a number, make an indent string containing that
+// many spaces.
+
+            if (typeof space === 'number') {
+                for (i = 0; i < space; i += 1) {
+                    indent += ' ';
+                }
+
+// If the space parameter is a string, it will be used as the indent string.
+
+            } else if (typeof space === 'string') {
+                indent = space;
+            }
+
+// If there is a replacer, it must be a function or an array.
+// Otherwise, throw an error.
+
+            rep = replacer;
+            if (replacer && typeof replacer !== 'function' &&
+                    (typeof replacer !== 'object' ||
+                    typeof replacer.length !== 'number')) {
+                throw new Error('JSON.stringify');
+            }
+
+// Make a fake root object containing our value under the key of ''.
+// Return the result of stringifying the value.
+
+            return str('', {'': value});
+        };
+    }
+
+
+// If the JSON object does not yet have a parse method, give it one.
+
+    if (typeof JSON.parse !== 'function') {
+        JSON.parse = function (text, reviver) {
+
+// The parse method takes a text and an optional reviver function, and returns
+// a JavaScript value if the text is a valid JSON text.
+
+            var j;
+
+            function walk(holder, key) {
+
+// The walk method is used to recursively walk the resulting structure so
+// that modifications can be made.
+
+                var k, v, value = holder[key];
+                if (value && typeof value === 'object') {
+                    for (k in value) {
+                        if (Object.prototype.hasOwnProperty.call(value, k)) {
+                            v = walk(value, k);
+                            if (v !== undefined) {
+                                value[k] = v;
+                            } else {
+                                delete value[k];
+                            }
+                        }
+                    }
+                }
+                return reviver.call(holder, key, value);
+            }
+
+
+// Parsing happens in four stages. In the first stage, we replace certain
+// Unicode characters with escape sequences. JavaScript handles many characters
+// incorrectly, either silently deleting them, or treating them as line endings.
+
+            text = String(text);
+            cx.lastIndex = 0;
+            if (cx.test(text)) {
+                text = text.replace(cx, function (a) {
+                    return '\\u' +
+                        ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
+                });
+            }
+
+// In the second stage, we run the text against regular expressions that look
+// for non-JSON patterns. We are especially concerned with '()' and 'new'
+// because they can cause invocation, and '=' because it can cause mutation.
+// But just to be safe, we want to reject all unexpected forms.
+
+// We split the second stage into 4 regexp operations in order to work around
+// crippling inefficiencies in IE's and Safari's regexp engines. First we
+// replace the JSON backslash pairs with '@' (a non-JSON character). Second, we
+// replace all simple value tokens with ']' characters. Third, we delete all
+// open brackets that follow a colon or comma or that begin the text. Finally,
+// we look to see that the remaining characters are only whitespace or ']' or
+// ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.
+
+            if (/^[\],:{}\s]*$/
+                    .test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@')
+                        .replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']')
+                        .replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {
+
+// In the third stage we use the eval function to compile the text into a
+// JavaScript structure. The '{' operator is subject to a syntactic ambiguity
+// in JavaScript: it can begin a block or an object literal. We wrap the text
+// in parens to eliminate the ambiguity.
+
+                j = eval('(' + text + ')');
+
+// In the optional fourth stage, we recursively walk the new structure, passing
+// each name/value pair to a reviver function for possible transformation.
+
+                return typeof reviver === 'function' ?
+                    walk({'': j}, '') : j;
+            }
+
+// If the text is not JSON parseable, then a SyntaxError is thrown.
+
+            throw new SyntaxError('JSON.parse');
+        };
+    }
+}());
diff --git a/vendor/assets/javascripts/underscore-min.js b/vendor/assets/javascripts/underscore-min.js
new file mode 100644
index 0000000..f502cf9
--- /dev/null
+++ b/vendor/assets/javascripts/underscore-min.js
@@ -0,0 +1,26 @@
+// Underscore.js 1.1.6
+// (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore is freely distributable under the MIT license.
+// Portions of Underscore are inspired or borrowed from Prototype,
+// Oliver Steele's Functional, and John Resig's Micro-Templating.
+// For all details and documentation:
+// http://documentcloud.github.com/underscore
+(function(){var p=this,C=p._,m={},i=Array.prototype,n=Object.prototype,f=i.slice,D=i.unshift,E=n.toString,l=n.hasOwnProperty,s=i.forEach,t=i.map,u=i.reduce,v=i.reduceRight,w=i.filter,x=i.every,y=i.some,o=i.indexOf,z=i.lastIndexOf;n=Array.isArray;var F=Object.keys,q=Function.prototype.bind,b=function(a){return new j(a)};typeof module!=="undefined"&&module.exports?(module.exports=b,b._=b):p._=b;b.VERSION="1.1.6";var h=b.each=b.forEach=function(a,c,d){if(a!=null)if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
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+return d};b.reduceRight=b.foldr=function(a,c,d,e){a==null&&(a=[]);if(v&&a.reduceRight===v)return e&&(c=b.bind(c,e)),d!==void 0?a.reduceRight(c,d):a.reduceRight(c);a=(b.isArray(a)?a.slice():b.toArray(a)).reverse();return b.reduce(a,c,d,e)};b.find=b.detect=function(a,c,b){var e;A(a,function(a,g,f){if(c.call(b,a,g,f))return e=a,!0});return e};b.filter=b.select=function(a,c,b){var e=[];if(a==null)return e;if(w&&a.filter===w)return a.filter(c,b);h(a,function(a,g,f){c.call(b,a,g,f)&&(e[e.length]=a)});return e};
+b.reject=function(a,c,b){var e=[];if(a==null)return e;h(a,function(a,g,f){c.call(b,a,g,f)||(e[e.length]=a)});return e};b.every=b.all=function(a,c,b){var e=!0;if(a==null)return e;if(x&&a.every===x)return a.every(c,b);h(a,function(a,g,f){if(!(e=e&&c.call(b,a,g,f)))return m});return e};var A=b.some=b.any=function(a,c,d){c||(c=b.identity);var e=!1;if(a==null)return e;if(y&&a.some===y)return a.some(c,d);h(a,function(a,b,f){if(e=c.call(d,a,b,f))return m});return e};b.include=b.contains=function(a,c){var b=
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+e=0;e<c;e++)d[e]=b.pluck(a,""+e);return d};b.indexOf=function(a,c,d){if(a==null)return-1;var e;if(d)return d=b.sortedIndex(a,c),a[d]===c?d:-1;if(o&&a.indexOf===o)return a.indexOf(c);d=0;for(e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,b){if(a==null)return-1;if(z&&a.lastIndexOf===z)return a.lastIndexOf(b);for(var d=a.length;d--;)if(a[d]===b)return d;return-1};b.range=function(a,b,d){arguments.length<=1&&(b=a||0,a=0);d=arguments[2]||1;for(var e=Math.max(Math.ceil((b-a)/
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+function(a,b){var d=f.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},b)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(f.call(arguments,1)))};var B=function(a,b,d){var e;return function(){var f=this,g=arguments,h=function(){e=null;a.apply(f,g)};d&&clearTimeout(e);if(d||!e)e=setTimeout(h,b)}};b.throttle=function(a,b){return B(a,b,!1)};b.debounce=function(a,b){return B(a,b,!0)};b.once=function(a){var b=!1,d;return function(){if(b)return d;b=!0;return d=a.apply(this,arguments)}};
+b.wrap=function(a,b){return function(){var d=[a].concat(f.call(arguments));return b.apply(this,d)}};b.compose=function(){var a=f.call(arguments);return function(){for(var b=f.call(arguments),d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};b.after=function(a,b){return function(){if(--a<1)return b.apply(this,arguments)}};b.keys=F||function(a){if(a!==Object(a))throw new TypeError("Invalid object");var b=[],d;for(d in a)l.call(a,d)&&(b[b.length]=d);return b};b.values=function(a){return b.map(a,
+b.identity)};b.functions=b.methods=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){h(f.call(arguments,1),function(b){for(var d in b)b[d]!==void 0&&(a[d]=b[d])});return a};b.defaults=function(a){h(f.call(arguments,1),function(b){for(var d in b)a[d]==null&&(a[d]=b[d])});return a};b.clone=function(a){return b.isArray(a)?a.slice():b.extend({},a)};b.tap=function(a,b){b(a);return a};b.isEqual=function(a,c){if(a===c)return!0;var d=typeof a;if(d!=
+typeof c)return!1;if(a==c)return!0;if(!a&&c||a&&!c)return!1;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return!1;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return!1;if(a.length&&a.length!==c.length)return!1;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return!1;
+for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return!1;return!0};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(l.call(a,c))return!1;return!0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=n||function(a){return E.call(a)==="[object Array]"};b.isArguments=function(a){return!(!a||!l.call(a,"callee"))};b.isFunction=function(a){return!(!a||!a.constructor||!a.call||!a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};
+b.isNumber=function(a){return!!(a===0||a&&a.toExponential&&a.toFixed)};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===!0||a===!1};b.isDate=function(a){return!(!a||!a.getTimezoneOffset||!a.setUTCFullYear)};b.isRegExp=function(a){return!(!a||!a.test||!a.exec||!(a.ignoreCase||a.ignoreCase===!1))};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===void 0};b.noConflict=function(){p._=C;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=
+0;e<a;e++)b.call(d,e)};b.mixin=function(a){h(b.functions(a),function(c){H(c,b[c]=a[c])})};var I=0;b.uniqueId=function(a){var b=I++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};b.template=function(a,c){var d=b.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,function(a,b){return"',"+b.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||
+null,function(a,b){return"');"+b.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return c?d(c):d};var j=function(a){this._wrapped=a};b.prototype=j.prototype;var r=function(a,c){return c?b(a).chain():a},H=function(a,c){j.prototype[a]=function(){var a=f.call(arguments);D.call(a,this._wrapped);return r(c.apply(b,a),this._chain)}};b.mixin(b);h(["pop","push","reverse","shift","sort",
+"splice","unshift"],function(a){var b=i[a];j.prototype[a]=function(){b.apply(this._wrapped,arguments);return r(this._wrapped,this._chain)}});h(["concat","join","slice"],function(a){var b=i[a];j.prototype[a]=function(){return r(b.apply(this._wrapped,arguments),this._chain)}});j.prototype.chain=function(){this._chain=!0;return this};j.prototype.value=function(){return this._wrapped}})();
diff --git a/vendor/assets/javascripts/underscore.js b/vendor/assets/javascripts/underscore.js
new file mode 100644
index 0000000..eaba008
--- /dev/null
+++ b/vendor/assets/javascripts/underscore.js
@@ -0,0 +1,807 @@
+//     Underscore.js 1.1.6
+//     (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
+//     Underscore is freely distributable under the MIT license.
+//     Portions of Underscore are inspired or borrowed from Prototype,
+//     Oliver Steele's Functional, and John Resig's Micro-Templating.
+//     For all details and documentation:
+//     http://documentcloud.github.com/underscore
+
+(function() {
+
+  // Baseline setup
+  // --------------
+
+  // Establish the root object, `window` in the browser, or `global` on the server.
+  var root = this;
+
+  // Save the previous value of the `_` variable.
+  var previousUnderscore = root._;
+
+  // Establish the object that gets returned to break out of a loop iteration.
+  var breaker = {};
+
+  // Save bytes in the minified (but not gzipped) version:
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
+
+  // Create quick reference variables for speed access to core prototypes.
+  var slice            = ArrayProto.slice,
+      unshift          = ArrayProto.unshift,
+      toString         = ObjProto.toString,
+      hasOwnProperty   = ObjProto.hasOwnProperty;
+
+  // All **ECMAScript 5** native function implementations that we hope to use
+  // are declared here.
+  var
+    nativeForEach      = ArrayProto.forEach,
+    nativeMap          = ArrayProto.map,
+    nativeReduce       = ArrayProto.reduce,
+    nativeReduceRight  = ArrayProto.reduceRight,
+    nativeFilter       = ArrayProto.filter,
+    nativeEvery        = ArrayProto.every,
+    nativeSome         = ArrayProto.some,
+    nativeIndexOf      = ArrayProto.indexOf,
+    nativeLastIndexOf  = ArrayProto.lastIndexOf,
+    nativeIsArray      = Array.isArray,
+    nativeKeys         = Object.keys,
+    nativeBind         = FuncProto.bind;
+
+  // Create a safe reference to the Underscore object for use below.
+  var _ = function(obj) { return new wrapper(obj); };
+
+  // Export the Underscore object for **CommonJS**, with backwards-compatibility
+  // for the old `require()` API. If we're not in CommonJS, add `_` to the
+  // global object.
+  if (typeof module !== 'undefined' && module.exports) {
+    module.exports = _;
+    _._ = _;
+  } else {
+    root._ = _;
+  }
+
+  // Current version.
+  _.VERSION = '1.1.6';
+
+  // Collection Functions
+  // --------------------
+
+  // The cornerstone, an `each` implementation, aka `forEach`.
+  // Handles objects implementing `forEach`, arrays, and raw objects.
+  // Delegates to **ECMAScript 5**'s native `forEach` if available.
+  var each = _.each = _.forEach = function(obj, iterator, context) {
+    if (obj == null) return;
+    if (nativeForEach && obj.forEach === nativeForEach) {
+      obj.forEach(iterator, context);
+    } else if (_.isNumber(obj.length)) {
+      for (var i = 0, l = obj.length; i < l; i++) {
+        if (iterator.call(context, obj[i], i, obj) === breaker) return;
+      }
+    } else {
+      for (var key in obj) {
+        if (hasOwnProperty.call(obj, key)) {
+          if (iterator.call(context, obj[key], key, obj) === breaker) return;
+        }
+      }
+    }
+  };
+
+  // Return the results of applying the iterator to each element.
+  // Delegates to **ECMAScript 5**'s native `map` if available.
+  _.map = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
+    each(obj, function(value, index, list) {
+      results[results.length] = iterator.call(context, value, index, list);
+    });
+    return results;
+  };
+
+  // **Reduce** builds up a single result from a list of values, aka `inject`,
+  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
+  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
+    var initial = memo !== void 0;
+    if (obj == null) obj = [];
+    if (nativeReduce && obj.reduce === nativeReduce) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
+    }
+    each(obj, function(value, index, list) {
+      if (!initial && index === 0) {
+        memo = value;
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, value, index, list);
+      }
+    });
+    if (!initial) throw new TypeError("Reduce of empty array with no initial value");
+    return memo;
+  };
+
+  // The right-associative version of reduce, also known as `foldr`.
+  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
+  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+    if (obj == null) obj = [];
+    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
+      if (context) iterator = _.bind(iterator, context);
+      return memo !== void 0 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
+    }
+    var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
+    return _.reduce(reversed, iterator, memo, context);
+  };
+
+  // Return the first value which passes a truth test. Aliased as `detect`.
+  _.find = _.detect = function(obj, iterator, context) {
+    var result;
+    any(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) {
+        result = value;
+        return true;
+      }
+    });
+    return result;
+  };
+
+  // Return all the elements that pass a truth test.
+  // Delegates to **ECMAScript 5**'s native `filter` if available.
+  // Aliased as `select`.
+  _.filter = _.select = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
+    each(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) results[results.length] = value;
+    });
+    return results;
+  };
+
+  // Return all the elements for which a truth test fails.
+  _.reject = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    each(obj, function(value, index, list) {
+      if (!iterator.call(context, value, index, list)) results[results.length] = value;
+    });
+    return results;
+  };
+
+  // Determine whether all of the elements match a truth test.
+  // Delegates to **ECMAScript 5**'s native `every` if available.
+  // Aliased as `all`.
+  _.every = _.all = function(obj, iterator, context) {
+    var result = true;
+    if (obj == null) return result;
+    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
+    each(obj, function(value, index, list) {
+      if (!(result = result && iterator.call(context, value, index, list))) return breaker;
+    });
+    return result;
+  };
+
+  // Determine if at least one element in the object matches a truth test.
+  // Delegates to **ECMAScript 5**'s native `some` if available.
+  // Aliased as `any`.
+  var any = _.some = _.any = function(obj, iterator, context) {
+    iterator || (iterator = _.identity);
+    var result = false;
+    if (obj == null) return result;
+    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
+    each(obj, function(value, index, list) {
+      if (result = iterator.call(context, value, index, list)) return breaker;
+    });
+    return result;
+  };
+
+  // Determine if a given value is included in the array or object using `===`.
+  // Aliased as `contains`.
+  _.include = _.contains = function(obj, target) {
+    var found = false;
+    if (obj == null) return found;
+    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
+    any(obj, function(value) {
+      if (found = value === target) return true;
+    });
+    return found;
+  };
+
+  // Invoke a method (with arguments) on every item in a collection.
+  _.invoke = function(obj, method) {
+    var args = slice.call(arguments, 2);
+    return _.map(obj, function(value) {
+      return (method.call ? method || value : value[method]).apply(value, args);
+    });
+  };
+
+  // Convenience version of a common use case of `map`: fetching a property.
+  _.pluck = function(obj, key) {
+    return _.map(obj, function(value){ return value[key]; });
+  };
+
+  // Return the maximum element or (element-based computation).
+  _.max = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
+    var result = {computed : -Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed >= result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Return the minimum element (or element-based computation).
+  _.min = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
+    var result = {computed : Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed < result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Sort the object's values by a criterion produced by an iterator.
+  _.sortBy = function(obj, iterator, context) {
+    return _.pluck(_.map(obj, function(value, index, list) {
+      return {
+        value : value,
+        criteria : iterator.call(context, value, index, list)
+      };
+    }).sort(function(left, right) {
+      var a = left.criteria, b = right.criteria;
+      return a < b ? -1 : a > b ? 1 : 0;
+    }), 'value');
+  };
+
+  // Use a comparator function to figure out at what index an object should
+  // be inserted so as to maintain order. Uses binary search.
+  _.sortedIndex = function(array, obj, iterator) {
+    iterator || (iterator = _.identity);
+    var low = 0, high = array.length;
+    while (low < high) {
+      var mid = (low + high) >> 1;
+      iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
+    }
+    return low;
+  };
+
+  // Safely convert anything iterable into a real, live array.
+  _.toArray = function(iterable) {
+    if (!iterable)                return [];
+    if (iterable.toArray)         return iterable.toArray();
+    if (_.isArray(iterable))      return iterable;
+    if (_.isArguments(iterable))  return slice.call(iterable);
+    return _.values(iterable);
+  };
+
+  // Return the number of elements in an object.
+  _.size = function(obj) {
+    return _.toArray(obj).length;
+  };
+
+  // Array Functions
+  // ---------------
+
+  // Get the first element of an array. Passing **n** will return the first N
+  // values in the array. Aliased as `head`. The **guard** check allows it to work
+  // with `_.map`.
+  _.first = _.head = function(array, n, guard) {
+    return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
+  };
+
+  // Returns everything but the first entry of the array. Aliased as `tail`.
+  // Especially useful on the arguments object. Passing an **index** will return
+  // the rest of the values in the array from that index onward. The **guard**
+  // check allows it to work with `_.map`.
+  _.rest = _.tail = function(array, index, guard) {
+    return slice.call(array, (index == null) || guard ? 1 : index);
+  };
+
+  // Get the last element of an array.
+  _.last = function(array) {
+    return array[array.length - 1];
+  };
+
+  // Trim out all falsy values from an array.
+  _.compact = function(array) {
+    return _.filter(array, function(value){ return !!value; });
+  };
+
+  // Return a completely flattened version of an array.
+  _.flatten = function(array) {
+    return _.reduce(array, function(memo, value) {
+      if (_.isArray(value)) return memo.concat(_.flatten(value));
+      memo[memo.length] = value;
+      return memo;
+    }, []);
+  };
+
+  // Return a version of the array that does not contain the specified value(s).
+  _.without = function(array) {
+    var values = slice.call(arguments, 1);
+    return _.filter(array, function(value){ return !_.include(values, value); });
+  };
+
+  // Produce a duplicate-free version of the array. If the array has already
+  // been sorted, you have the option of using a faster algorithm.
+  // Aliased as `unique`.
+  _.uniq = _.unique = function(array, isSorted) {
+    return _.reduce(array, function(memo, el, i) {
+      if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo[memo.length] = el;
+      return memo;
+    }, []);
+  };
+
+  // Produce an array that contains every item shared between all the
+  // passed-in arrays.
+  _.intersect = function(array) {
+    var rest = slice.call(arguments, 1);
+    return _.filter(_.uniq(array), function(item) {
+      return _.every(rest, function(other) {
+        return _.indexOf(other, item) >= 0;
+      });
+    });
+  };
+
+  // Zip together multiple lists into a single array -- elements that share
+  // an index go together.
+  _.zip = function() {
+    var args = slice.call(arguments);
+    var length = _.max(_.pluck(args, 'length'));
+    var results = new Array(length);
+    for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
+    return results;
+  };
+
+  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
+  // we need this function. Return the position of the first occurrence of an
+  // item in an array, or -1 if the item is not included in the array.
+  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
+  // If the array is large and already in sort order, pass `true`
+  // for **isSorted** to use binary search.
+  _.indexOf = function(array, item, isSorted) {
+    if (array == null) return -1;
+    var i, l;
+    if (isSorted) {
+      i = _.sortedIndex(array, item);
+      return array[i] === item ? i : -1;
+    }
+    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
+    for (i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
+    return -1;
+  };
+
+
+  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
+  _.lastIndexOf = function(array, item) {
+    if (array == null) return -1;
+    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
+    var i = array.length;
+    while (i--) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Generate an integer Array containing an arithmetic progression. A port of
+  // the native Python `range()` function. See
+  // [the Python documentation](http://docs.python.org/library/functions.html#range).
+  _.range = function(start, stop, step) {
+    if (arguments.length <= 1) {
+      stop = start || 0;
+      start = 0;
+    }
+    step = arguments[2] || 1;
+
+    var len = Math.max(Math.ceil((stop - start) / step), 0);
+    var idx = 0;
+    var range = new Array(len);
+
+    while(idx < len) {
+      range[idx++] = start;
+      start += step;
+    }
+
+    return range;
+  };
+
+  // Function (ahem) Functions
+  // ------------------
+
+  // Create a function bound to a given object (assigning `this`, and arguments,
+  // optionally). Binding with arguments is also known as `curry`.
+  // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
+  // We check for `func.bind` first, to fail fast when `func` is undefined.
+  _.bind = function(func, obj) {
+    if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
+    var args = slice.call(arguments, 2);
+    return function() {
+      return func.apply(obj, args.concat(slice.call(arguments)));
+    };
+  };
+
+  // Bind all of an object's methods to that object. Useful for ensuring that
+  // all callbacks defined on an object belong to it.
+  _.bindAll = function(obj) {
+    var funcs = slice.call(arguments, 1);
+    if (funcs.length == 0) funcs = _.functions(obj);
+    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+    return obj;
+  };
+
+  // Memoize an expensive function by storing its results.
+  _.memoize = function(func, hasher) {
+    var memo = {};
+    hasher || (hasher = _.identity);
+    return function() {
+      var key = hasher.apply(this, arguments);
+      return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
+    };
+  };
+
+  // Delays a function for the given number of milliseconds, and then calls
+  // it with the arguments supplied.
+  _.delay = function(func, wait) {
+    var args = slice.call(arguments, 2);
+    return setTimeout(function(){ return func.apply(func, args); }, wait);
+  };
+
+  // Defers a function, scheduling it to run after the current call stack has
+  // cleared.
+  _.defer = function(func) {
+    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
+  };
+
+  // Internal function used to implement `_.throttle` and `_.debounce`.
+  var limit = function(func, wait, debounce) {
+    var timeout;
+    return function() {
+      var context = this, args = arguments;
+      var throttler = function() {
+        timeout = null;
+        func.apply(context, args);
+      };
+      if (debounce) clearTimeout(timeout);
+      if (debounce || !timeout) timeout = setTimeout(throttler, wait);
+    };
+  };
+
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time.
+  _.throttle = function(func, wait) {
+    return limit(func, wait, false);
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds.
+  _.debounce = function(func, wait) {
+    return limit(func, wait, true);
+  };
+
+  // Returns a function that will be executed at most one time, no matter how
+  // often you call it. Useful for lazy initialization.
+  _.once = function(func) {
+    var ran = false, memo;
+    return function() {
+      if (ran) return memo;
+      ran = true;
+      return memo = func.apply(this, arguments);
+    };
+  };
+
+  // Returns the first function passed as an argument to the second,
+  // allowing you to adjust arguments, run code before and after, and
+  // conditionally execute the original function.
+  _.wrap = function(func, wrapper) {
+    return function() {
+      var args = [func].concat(slice.call(arguments));
+      return wrapper.apply(this, args);
+    };
+  };
+
+  // Returns a function that is the composition of a list of functions, each
+  // consuming the return value of the function that follows.
+  _.compose = function() {
+    var funcs = slice.call(arguments);
+    return function() {
+      var args = slice.call(arguments);
+      for (var i=funcs.length-1; i >= 0; i--) {
+        args = [funcs[i].apply(this, args)];
+      }
+      return args[0];
+    };
+  };
+
+  // Returns a function that will only be executed after being called N times.
+  _.after = function(times, func) {
+    return function() {
+      if (--times < 1) { return func.apply(this, arguments); }
+    };
+  };
+
+
+  // Object Functions
+  // ----------------
+
+  // Retrieve the names of an object's properties.
+  // Delegates to **ECMAScript 5**'s native `Object.keys`
+  _.keys = nativeKeys || function(obj) {
+    if (obj !== Object(obj)) throw new TypeError('Invalid object');
+    var keys = [];
+    for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
+    return keys;
+  };
+
+  // Retrieve the values of an object's properties.
+  _.values = function(obj) {
+    return _.map(obj, _.identity);
+  };
+
+  // Return a sorted list of the function names available on the object.
+  // Aliased as `methods`
+  _.functions = _.methods = function(obj) {
+    return _.filter(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
+  };
+
+  // Extend a given object with all the properties in passed-in object(s).
+  _.extend = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      for (var prop in source) {
+        if (source[prop] !== void 0) obj[prop] = source[prop];
+      }
+    });
+    return obj;
+  };
+
+  // Fill in a given object with default properties.
+  _.defaults = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      for (var prop in source) {
+        if (obj[prop] == null) obj[prop] = source[prop];
+      }
+    });
+    return obj;
+  };
+
+  // Create a (shallow-cloned) duplicate of an object.
+  _.clone = function(obj) {
+    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
+  };
+
+  // Invokes interceptor with the obj, and then returns obj.
+  // The primary purpose of this method is to "tap into" a method chain, in
+  // order to perform operations on intermediate results within the chain.
+  _.tap = function(obj, interceptor) {
+    interceptor(obj);
+    return obj;
+  };
+
+  // Perform a deep comparison to check if two objects are equal.
+  _.isEqual = function(a, b) {
+    // Check object identity.
+    if (a === b) return true;
+    // Different types?
+    var atype = typeof(a), btype = typeof(b);
+    if (atype != btype) return false;
+    // Basic equality test (watch out for coercions).
+    if (a == b) return true;
+    // One is falsy and the other truthy.
+    if ((!a && b) || (a && !b)) return false;
+    // Unwrap any wrapped objects.
+    if (a._chain) a = a._wrapped;
+    if (b._chain) b = b._wrapped;
+    // One of them implements an isEqual()?
+    if (a.isEqual) return a.isEqual(b);
+    // Check dates' integer values.
+    if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
+    // Both are NaN?
+    if (_.isNaN(a) && _.isNaN(b)) return false;
+    // Compare regular expressions.
+    if (_.isRegExp(a) && _.isRegExp(b))
+      return a.source     === b.source &&
+             a.global     === b.global &&
+             a.ignoreCase === b.ignoreCase &&
+             a.multiline  === b.multiline;
+    // If a is not an object by this point, we can't handle it.
+    if (atype !== 'object') return false;
+    // Check for different array lengths before comparing contents.
+    if (a.length && (a.length !== b.length)) return false;
+    // Nothing else worked, deep compare the contents.
+    var aKeys = _.keys(a), bKeys = _.keys(b);
+    // Different object sizes?
+    if (aKeys.length != bKeys.length) return false;
+    // Recursive comparison of contents.
+    for (var key in a) if (!(key in b) || !_.isEqual(a[key], b[key])) return false;
+    return true;
+  };
+
+  // Is a given array or object empty?
+  _.isEmpty = function(obj) {
+    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
+    for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
+    return true;
+  };
+
+  // Is a given value a DOM element?
+  _.isElement = function(obj) {
+    return !!(obj && obj.nodeType == 1);
+  };
+
+  // Is a given value an array?
+  // Delegates to ECMA5's native Array.isArray
+  _.isArray = nativeIsArray || function(obj) {
+    return toString.call(obj) === '[object Array]';
+  };
+
+  // Is a given variable an arguments object?
+  _.isArguments = function(obj) {
+    return !!(obj && hasOwnProperty.call(obj, 'callee'));
+  };
+
+  // Is a given value a function?
+  _.isFunction = function(obj) {
+    return !!(obj && obj.constructor && obj.call && obj.apply);
+  };
+
+  // Is a given value a string?
+  _.isString = function(obj) {
+    return !!(obj === '' || (obj && obj.charCodeAt && obj.substr));
+  };
+
+  // Is a given value a number?
+  _.isNumber = function(obj) {
+    return !!(obj === 0 || (obj && obj.toExponential && obj.toFixed));
+  };
+
+  // Is the given value `NaN`? `NaN` happens to be the only value in JavaScript
+  // that does not equal itself.
+  _.isNaN = function(obj) {
+    return obj !== obj;
+  };
+
+  // Is a given value a boolean?
+  _.isBoolean = function(obj) {
+    return obj === true || obj === false;
+  };
+
+  // Is a given value a date?
+  _.isDate = function(obj) {
+    return !!(obj && obj.getTimezoneOffset && obj.setUTCFullYear);
+  };
+
+  // Is the given value a regular expression?
+  _.isRegExp = function(obj) {
+    return !!(obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false));
+  };
+
+  // Is a given value equal to null?
+  _.isNull = function(obj) {
+    return obj === null;
+  };
+
+  // Is a given variable undefined?
+  _.isUndefined = function(obj) {
+    return obj === void 0;
+  };
+
+  // Utility Functions
+  // -----------------
+
+  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
+  // previous owner. Returns a reference to the Underscore object.
+  _.noConflict = function() {
+    root._ = previousUnderscore;
+    return this;
+  };
+
+  // Keep the identity function around for default iterators.
+  _.identity = function(value) {
+    return value;
+  };
+
+  // Run a function **n** times.
+  _.times = function (n, iterator, context) {
+    for (var i = 0; i < n; i++) iterator.call(context, i);
+  };
+
+  // Add your own custom functions to the Underscore object, ensuring that
+  // they're correctly added to the OOP wrapper as well.
+  _.mixin = function(obj) {
+    each(_.functions(obj), function(name){
+      addToWrapper(name, _[name] = obj[name]);
+    });
+  };
+
+  // Generate a unique integer id (unique within the entire client session).
+  // Useful for temporary DOM ids.
+  var idCounter = 0;
+  _.uniqueId = function(prefix) {
+    var id = idCounter++;
+    return prefix ? prefix + id : id;
+  };
+
+  // By default, Underscore uses ERB-style template delimiters, change the
+  // following template settings to use alternative delimiters.
+  _.templateSettings = {
+    evaluate    : /<%([\s\S]+?)%>/g,
+    interpolate : /<%=([\s\S]+?)%>/g
+  };
+
+  // JavaScript micro-templating, similar to John Resig's implementation.
+  // Underscore templating handles arbitrary delimiters, preserves whitespace,
+  // and correctly escapes quotes within interpolated code.
+  _.template = function(str, data) {
+    var c  = _.templateSettings;
+    var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
+      'with(obj||{}){__p.push(\'' +
+      str.replace(/\\/g, '\\\\')
+         .replace(/'/g, "\\'")
+         .replace(c.interpolate, function(match, code) {
+           return "'," + code.replace(/\\'/g, "'") + ",'";
+         })
+         .replace(c.evaluate || null, function(match, code) {
+           return "');" + code.replace(/\\'/g, "'")
+                              .replace(/[\r\n\t]/g, ' ') + "__p.push('";
+         })
+         .replace(/\r/g, '\\r')
+         .replace(/\n/g, '\\n')
+         .replace(/\t/g, '\\t')
+         + "');}return __p.join('');";
+    var func = new Function('obj', tmpl);
+    return data ? func(data) : func;
+  };
+
+  // The OOP Wrapper
+  // ---------------
+
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+  var wrapper = function(obj) { this._wrapped = obj; };
+
+  // Expose `wrapper.prototype` as `_.prototype`
+  _.prototype = wrapper.prototype;
+
+  // Helper function to continue chaining intermediate results.
+  var result = function(obj, chain) {
+    return chain ? _(obj).chain() : obj;
+  };
+
+  // A method to easily add functions to the OOP wrapper.
+  var addToWrapper = function(name, func) {
+    wrapper.prototype[name] = function() {
+      var args = slice.call(arguments);
+      unshift.call(args, this._wrapped);
+      return result(func.apply(_, args), this._chain);
+    };
+  };
+
+  // Add all of the Underscore functions to the wrapper object.
+  _.mixin(_);
+
+  // Add all mutator Array functions to the wrapper.
+  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    var method = ArrayProto[name];
+    wrapper.prototype[name] = function() {
+      method.apply(this._wrapped, arguments);
+      return result(this._wrapped, this._chain);
+    };
+  });
+
+  // Add all accessor Array functions to the wrapper.
+  each(['concat', 'join', 'slice'], function(name) {
+    var method = ArrayProto[name];
+    wrapper.prototype[name] = function() {
+      return result(method.apply(this._wrapped, arguments), this._chain);
+    };
+  });
+
+  // Start chaining a wrapped Underscore object.
+  wrapper.prototype.chain = function() {
+    this._chain = true;
+    return this;
+  };
+
+  // Extracts the result from a wrapped and chained object.
+  wrapper.prototype.value = function() {
+    return this._wrapped;
+  };
+
+})();