Create new website interface

This pull request changes the main interface used for the QuickSSH site. The new interface is built upon custom CSS and a Fontello font icon set.

The new interface looks somewhat like the following screenshot:
![interface](https://cloud.githubusercontent.com/assets/3946887/5103121/c07e2666-701f-11e4-9c82-6bbab5a2f259.PNG)