Issue 1975 Most followed users

Defined here : https://github.com/ginatrapani/ThinkUp/issues/1975

Displays most followed users the user is following. 

![screenshot from 2014-08-17 20 43 58](https://cloud.githubusercontent.com/assets/4369596/3945539/e22909fc-2646-11e4-950e-7927210620f6.png)