Fixed social icons being pushed down on window resize.

This PR fixes social icons expanding the sidebar vertically on smaller screens.
 
Before: 
![screen shot 2013-12-06 at 7 13 46 pm](https://f.cloud.github.com/assets/289269/1697609/01c92092-5eee-11e3-8fc8-adca8c6cf957.png)

After:
![screen shot 2013-12-06 at 7 13 53 pm](https://f.cloud.github.com/assets/289269/1697610/05aec20c-5eee-11e3-8d50-49618632ef47.png)

Important change is here - sorry, Sublime automatically removes extraneous whitespace.