Merge branch 'feature/arjun/new-discussions' of github.com:MITx/mitx into…

Merge branch 'feature/arjun/new-discussions' of github.com:MITx/mitx into feature/arjun/new-discussions

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

@@ -18,7 +18,8 @@ if Backbone?
       @current_page < @pages
 
     addThread: (thread, options) ->
-      # TODO: Check for existing thread with same ID?
+      # TODO: Check for existing thread with same ID in a faster way
+      if not @find(thread.id)
         options ||= {}
         model = new Thread thread
         @add model

lms/static/sass/_discussion.scss

@@ -1039,7 +1039,7 @@ body.discussion {
       }
     }
 
-    .more a {      
+    .more-pages a {
       background: #eee;
       font-size: 12px;
       line-height: 33px;