Update Ember.js, Handlebars and jQuery to latest

Gemfile

@@ -88,8 +88,8 @@ gem 'active_model_serializers'
 gem 'onebox'
 
 gem 'ember-rails'
-gem 'ember-source', '~> 1.2.0.1'
-gem 'handlebars-source', '~> 1.1.2'
+gem 'ember-source', '1.6.0.beta.2'
+gem 'handlebars-source', '1.3.0'
 gem 'barber'
 
 gem 'message_bus'

Gemfile.lock

@@ -80,8 +80,8 @@ GEM
       handlebars-source
       jquery-rails (>= 1.0.17)
       railties (>= 3.1)
-    ember-source (1.2.0.1)
-      handlebars-source (~> 1.1.2)
+    ember-source (1.6.0.beta.2)
+      handlebars-source (~> 1.0)
     erubis (2.7.0)
     eventmachine (1.0.3)
     excon (0.28.0)
@@ -123,7 +123,7 @@ GEM
     given_core (3.5.4)
       sorcerer (>= 0.3.7)
     guess_html_encoding (0.0.9)
-    handlebars-source (1.1.2)
+    handlebars-source (1.3.0)
     hashie (2.0.5)
     hexpress (1.2.0)
     highline (1.6.20)
@@ -400,7 +400,7 @@ DEPENDENCIES
   discourse_plugin!
   email_reply_parser-discourse
   ember-rails
-  ember-source (~> 1.2.0.1)
+  ember-source (= 1.6.0.beta.2)
   eventmachine
   fabrication
   fakeweb (~> 1.3.0)
@@ -412,7 +412,7 @@ DEPENDENCIES
   fog (= 1.18.0)
   foreman
   gctools
-  handlebars-source (~> 1.1.2)
+  handlebars-source (= 1.3.0)
   highline
   hiredis
   image_optim (= 0.9.1)

app/assets/javascripts/jquery_include.js.erb

@@ -1,7 +1,7 @@
 <%
 if Rails.env.development? || Rails.env.test?
-  require_asset ("development/jquery-2.0.3.js")
+  require_asset ("development/jquery-2.1.0.js")
 else
-  require_asset ("production/jquery-2.0.3.min.js")
+  require_asset ("production/jquery-2.1.0.min.js")
 end
 %>

test/javascripts/test_helper.js

@@ -9,7 +9,7 @@
 //= require ../../app/assets/javascripts/discourse/lib/probes.js
 
 // Externals we need to load first
-//= require development/jquery-2.0.3.js
+//= require development/jquery-2.1.0.js
 //= require jquery.ui.widget.js
 //= require handlebars.js
 //= require development/ember.js