dashboard reloaded. added font-awesome for icons

I think this new dashboard contains all of the information and functionality of the old one, with a number of benefits:
- awesome icons courtesy of [font awesome](http://fontawesome.io/)
- more condensed view
- committer gravatar
- commit message

![screen shot 2013-07-19 at 9 38 38 pm](https://f.cloud.github.com/assets/112170/829617/b626b8b0-f0ee-11e2-935c-55af4aece6a7.png)