Sponsor website form

- Added website field to the form
- Added styling for the alerts:

### Success

[![](http://img.springe.st/2014_11_23_11_12_49_sp1q8.jpg)](http://img.springe.st/2014_11_23_11_12_49_sp1q8.jpg) 

### Info

[![](http://img.springe.st/2014_11_23_19_48_44_ekqyr.jpg)](http://img.springe.st/2014_11_23_19_48_44_ekqyr.jpg) 

### Danger / Error

[![](http://img.springe.st/2014_11_23_19_50_11_z27kx.jpg)](http://img.springe.st/2014_11_23_19_50_11_z27kx.jpg)