Fix profile pages

Fix Profile pages properly
(1) Remove duplicated method calls that got left in  common.js this morning ( they got moved back to app.js )
(2) Use the mediator to ensure the avatar is currectly loaded along with the comments:

![avatars-and-comments](https://cloud.githubusercontent.com/assets/986155/4682840/4d81655a-5621-11e4-8d1a-8683f58eee75.png)