Drop annoying /thread/ in discussion URLs that adds nothing.

lms/djangoapps/django_comment_client/forum/urls.py

@@ -4,7 +4,7 @@ import django_comment_client.forum.views
 urlpatterns = patterns('django_comment_client.forum.views',
     url(r'users/(?P<user_id>\w+)/followed$', 'followed_threads', name='followed_threads'),
     url(r'users/(?P<user_id>\w+)$', 'user_profile', name='user_profile'),
-    url(r'(?P<discussion_id>[\w\-]+)/threads/(?P<thread_id>[-\w]+)$', 'single_thread', name='single_thread'),
     url(r'(?P<discussion_id>[\w\-]+)/inline$', 'inline_discussion', name='inline_discussion'),
+    url(r'(?P<discussion_id>[\w\-]+)/(?P<thread_id>[-\w]+)$', 'single_thread', name='single_thread'),
     url(r'', 'forum_form_discussion', name='forum_form_discussion'),
 )

lms/static/coffee/src/discussion/discussion_router.coffee

@@ -2,7 +2,7 @@ if Backbone?
   class @DiscussionRouter extends Backbone.Router
     routes:
       "": "allThreads"
-      ":forum_name/threads/:thread_id" : "showThread"
+      ":forum_name/:thread_id" : "showThread"
 
     initialize: (options) ->
         @discussion = options['discussion']
@@ -44,7 +44,7 @@ if Backbone?
 
     navigateToThread: (thread_id) =>
       thread = @discussion.get(thread_id)
-      @navigate("#{thread.get("commentable_id")}/threads/#{(thread.get('slug') or thread_id)}", trigger: true)
+      @navigate("#{thread.get("commentable_id")}/#{(thread.get('slug') or thread_id)}", trigger: true)
 
     navigateToAllThreads: =>
       @navigate("", trigger: true)