rename font-awesome.min.css to font-awesome.css and update config

Moodle $THEME->sheets parser doesn't like .min in an array and treats it like a file extension
![screen shot 2014-04-07 at 9 42 19 am](https://cloud.githubusercontent.com/assets/743499/2627001/262219d2-bdf6-11e3-87d7-e88c3c40163d.png)