Merge pull request #748 from MITx/hotfix/arjun/discussion_trailing_slash

New URLs require a trailing slash

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) ->