Adding in a new message data model and the corresponding methods to in the API.

test/test_api_usage.py

@@ -4283,7 +4283,11 @@ class TestSuperUserManagement(ApiTestCase):
     self.login(ADMIN_ACCESS_USER)
 
     # Create a message
-    self.postJsonResponse(Messages)
+    self.postJsonResponse(Messages, data=dict(messages=[{"content": "new message"}]))
+
+    json = self.getJsonResponse(Messages)
+
+    self.assertEquals(len(json['messages']), 2)
 
 if __name__ == '__main__':
   unittest.main()