Fix the padding/margin of the message displayed when no posts are written

*Excuse the footers in the screenshots, that's my own personalized customization that has nothing to do with this PR.*

Before:

![screen shot 2014-03-20 at 12 58 26 am](https://f.cloud.github.com/assets/740289/2469064/b2b4de24-afec-11e3-8b37-d8faccc0e415.png)

After:

![screen shot 2014-03-20 at 12 58 08 am](https://f.cloud.github.com/assets/740289/2469066/b6e875dc-afec-11e3-801e-c20b4021b769.png)