adding sources to candidate bios

Adding sources for bio text, as shown in mock-up on #109 and a few small styling fixes. 

Screenshot: 
![screen shot 2014-08-17 at 6 59 11 pm](https://cloud.githubusercontent.com/assets/6467815/3946762/510bb228-267b-11e4-9e6b-cab53ff27d35.png)