Add Twitter, Facebook, Google+ and PN Employee Profile social buttons

Notes:
- Adds FontAwesome (don't forget to bower install)

Adds social media icons below the profile pic.

![screenshot 2014-03-18 21 05 27](https://f.cloud.github.com/assets/646108/2455611/9f85ffee-af02-11e3-8eda-601254a865d9.png)