Fixed exception when updating a layout from back-office which contained an editable area

lib/locomotive/liquid/tags/editable/base.rb

@@ -19,6 +19,9 @@ module Locomotive
           end
 
           def end_tag
+            super
+            
+            if @context[:page].present?
               @context[:page].add_or_update_editable_element({
                 :block => @context[:current_block].try(:name),
                 :slug => @slug,
@@ -28,6 +31,7 @@ module Locomotive
                 :from_parent => false
               }, document_type)
             end
+          end
 
           def render(context)
             current_page = context.registers[:page]