Make forms centered

## Before:
![screen shot 2014-10-08 at 6 58 47 pm](https://cloud.githubusercontent.com/assets/230476/4570132/f8f72044-4f57-11e4-8093-478811ee438d.png)

## After:

![screen shot 2014-10-08 at 6 56 31 pm](https://cloud.githubusercontent.com/assets/230476/4570135/ffecefdc-4f57-11e4-9f88-6600b7c43aec.png)