Be more specific when catching 'URL not found' error, also add test

assets/scripts/app/routes.coffee

@@ -9,7 +9,7 @@ Ember.Router.reopen
     try
       @_super(url)
     catch error
-      @_super('/not-found')
+      @_super('/not-found') if error.message.match(/No route matched the URL/)
 
 # TODO: don't reopen Ember.Route to add events, there should be
 #       a better way (like "parent" resource for everything inside map)

assets/scripts/spec/routes_spec.coffee

@@ -0,0 +1,7 @@
+describe 'router', ->
+  it 'renders notFound template when URL can\t be found', ->
+    app '/somehing/something/something/.../dark/side/..../something/something/something/.../complete'
+    waitFor appRendered
+    runs ->
+      expect( $('#main').text().trim() ).toEqual('The requested page was not found.')
+

assets/scripts/spec/support/conditions.coffee

@@ -12,3 +12,4 @@
 @queuesRendered  = notEmpty('#queue_linux li')
 @workersRendered = notEmpty('.worker')
 @logRendered     = notEmpty('#log p')
+@appRendered     = -> $('.ember-view.application').length