Fix Icon Positions

This fixes a couple of things.

If my file name was ```something.js.coffee``` the JS logo would be present. 

Before:
![screen shot 2014-08-17 at 16 53 49](https://cloud.githubusercontent.com/assets/1273965/3945052/838bc424-2629-11e4-8c56-1a886cb930d9.png)
After:
![screen shot 2014-08-17 at 16 54 03](https://cloud.githubusercontent.com/assets/1273965/3945053/88a61ea0-2629-11e4-8cc2-3ebee9610615.png)


Also, fixed  the positioning of Coffee and Bower files in the tree view:

Before:
![screen shot 2014-08-14 at 15 01 42](https://cloud.githubusercontent.com/assets/1273965/3945056/9d431f34-2629-11e4-8a68-4a1c1ed8cf26.png)
After:
![screen shot 2014-08-17 at 17 15 10](https://cloud.githubusercontent.com/assets/1273965/3945057/b4696c4a-2629-11e4-9c9b-cc9aceabcf12.png)