Simplyfing Primary Action Buttons

Removing Gradient and flattening

![image](https://f.cloud.github.com/assets/592335/1272853/7047e842-2d38-11e3-8b1a-c7c54b60c847.png)

![image](https://f.cloud.github.com/assets/592335/1272849/59988dcc-2d38-11e3-8aa4-19cc609f4d11.png)