Added Editor Module Icons

Hope you like them:

![icons](https://cloud.githubusercontent.com/assets/1235520/3734771/e0c3c816-171b-11e4-97ec-0a46f9891cbc.jpg)

* Blue Force Tracking
* Check PBO
* Fatigue System
* Interaction
* Medical System
* Respawn System (already committed)

Do you want the psd file checked in aswell?