Bootstrap 3 and UI improvements

Looks like this:

![image](https://cloud.githubusercontent.com/assets/221013/3975044/42d6cc8e-2800-11e4-9e4d-f7744e9f28fc.png)
![image](https://cloud.githubusercontent.com/assets/221013/3975050/5889bffa-2800-11e4-8032-fdf797f5d10c.png)
![image](https://cloud.githubusercontent.com/assets/221013/3975073/bd86f5bc-2800-11e4-9388-82de66df3e75.png)