adds in functionality to filter files in list

Uses a [list.js](http://listjs.com/) implementation rather than datatables

closes #58 

![screen shot 2014-10-13 at 3 03 13 pm](https://cloud.githubusercontent.com/assets/1656824/4620956/f4c1104a-5324-11e4-83d1-c529cd7721c5.png)
![screen shot 2014-10-13 at 3 03 21 pm](https://cloud.githubusercontent.com/assets/1656824/4620958/f85f96ea-5324-11e4-8592-39f8592bdbbf.png)