update message bus for .stop() support, stop the message bus during test

Gemfile_rails4.lock

@@ -55,7 +55,7 @@ GIT
 
 GIT
   remote: https://github.com/SamSaffron/message_bus
-  revision: 6cdab8a4e0d06203cbdb146b52159e710b891a82
+  revision: c37c06d4c2db730971e6eb547da316611b3100ae
   specs:
     message_bus (0.9.2)
       eventmachine
@@ -337,7 +337,7 @@ GEM
       msgpack (>= 0.4.3)
       trollop (>= 1.16.2)
     redcarpet (3.0.0)
-    redis (3.0.5)
+    redis (3.0.6)
     redis-actionpack (4.0.0)
       actionpack (~> 4)
       redis-rack (~> 1.5.0)
@@ -428,10 +428,10 @@ GEM
     therubyracer (0.12.0)
       libv8 (~> 3.16.14.0)
       ref
-    thin (1.6.0)
+    thin (1.6.1)
       daemons (>= 1.0.9)
       eventmachine (>= 1.0.0)
-      rack (>= 1.5.0)
+      rack (>= 1.0.0)
     thor (0.18.1)
     thread_safe (0.1.3)
       atomic

test/javascripts/test_helper.js

@@ -93,6 +93,9 @@ $.ajax = function() {
   return oldAjax.apply(this, arguments);
 };
 
+// Stop the message bus so we don't get ajax calls
+Discourse.MessageBus.stop();
+
 // Trick JSHint into allow document.write
 var d = document;
 d.write('<div id="ember-testing-container"><div id="ember-testing"></div></div>');