Tweak site design

@jdiez17 ready to merge, assuming you like the changes.

![2014-03-22_10 27 15](https://f.cloud.github.com/assets/1310872/2491211/9c88b7f2-b1df-11e3-8f2e-b09a0060bff3.png)
![2014-03-22_10 29 11](https://f.cloud.github.com/assets/1310872/2491212/9c896a4e-b1df-11e3-9d7d-295e308837bc.png)
![2014-03-22_10 28 55](https://f.cloud.github.com/assets/1310872/2491213/9c8a3f46-b1df-11e3-9552-a5e1d0a8adb8.png)
![2014-03-22_10 29 38](https://f.cloud.github.com/assets/1310872/2491214/9c93d25e-b1df-11e3-824e-8416be919393.png)
![2014-03-22_10 29 47](https://f.cloud.github.com/assets/1310872/2491215/9c94edc4-b1df-11e3-9ac0-c17a735228d8.png)
![2014-03-22_10 29 22](https://f.cloud.github.com/assets/1310872/2491216/9c9d4a5a-b1df-11e3-9f1a-581608788ff9.png)