Fixes profile photo breakpoint oddity.

Corrects this issue by adding `.img-responsive` class to profile images on dashboard.  Also removes explicit heights off the `.profile-photo` class. 

**Demonstrated breakpoint issue because I can't words**

![image](https://cloud.githubusercontent.com/assets/2453394/4379631/64d8aa00-4362-11e4-97d3-41ef5d74c0ca.png)