update coffeescript to use new status url

common/static/coffee/src/discussion/utils.coffee

@@ -84,7 +84,7 @@ class @DiscussionUtil
       threads                 : "/courses/#{$$course_id}/discussion/forum"
       "enable_notifications"  : "/notification_prefs/enable/"
       "disable_notifications" : "/notification_prefs/disable/"
-      "notifications_status" : "/user_api/v1/user_prefs/?key=notification_pref&use=#{param}"
+      "notifications_status" : "notification_prefs/status/user_prefs/?key=notification_pref&use=#{param}"
     }[name]
 
   @safeAjax: (params) ->

common/static/coffee/src/discussion/views/discussion_thread_list_view.coffee

@@ -202,9 +202,8 @@ if Backbone?
       DiscussionUtil.safeAjax
           url: url
           type: "GET"
-          dataType: 'json'
           success: (response, textStatus) =>
-            if response.count==1
+            if response.status
               $('input.email-setting').attr('checked','checked')
             else
               $('input.email-setting').removeAttr('checked')

lms/djangoapps/notification_prefs/views.py

@@ -142,7 +142,7 @@ def ajax_status(request):
     if not request.user.is_authenticated():
         raise PermissionDenied
 
-   prefs UserPreference.objects.get(
+    prefs = UserPreference.objects.get(
         user=request.user,
         key=NOTIFICATION_PREF_KEY,
         defaults={