Merge pull request #749 from MITx/hotfix/arjun/discussion_trailing_slash

Better fix for trailing slash

lms/djangoapps/django_comment_client/urls.py

 from django.conf.urls.defaults import url, patterns, include
 
 urlpatterns = patterns('',
-    url(r'forum/', include('django_comment_client.forum.urls')),
+    url(r'forum/?', include('django_comment_client.forum.urls')),
     url(r'', include('django_comment_client.base.urls')),
 )

lms/static/coffee/src/discussion/utils.coffee

@@ -67,7 +67,7 @@ class @DiscussionUtil
       permanent_link_comment  : "/courses/#{$$course_id}/discussion/forum/#{param}/threads/#{param1}##{param2}"
       user_profile            : "/courses/#{$$course_id}/discussion/forum/users/#{param}"
       followed_threads       : "/courses/#{$$course_id}/discussion/forum/users/#{param}/followed"
-      threads                 : "/courses/#{$$course_id}/discussion/forum/"
+      threads                 : "/courses/#{$$course_id}/discussion/forum"
     }[name]
 
   @safeAjax: (params) ->