Add a json_success style result to updates responses.

(imported from commit 6492f98f1e1f5b7622caa2f3427ae60bdfd3df0e)

zephyr/views.py

@@ -204,6 +204,8 @@ def format_updates_response(messages, mit_sync_bot=False, apply_markdown=False,
     if mit_sync_bot:
         messages = [m for m in messages if not mit_sync_table.get(m.id)]
     return {'messages': [message.to_dict(apply_markdown) for message in messages],
+            "result": "success",
+            "msg": "",
             'where':   where}
 
 def return_messages_immediately(request, handler, user_profile, **kwargs):