New Sprites for AI HUD!

Provides a new sprite set for the AI HUD from MrSnapwalk!
![screenshot 2014-07-14 23 13 51](https://cloud.githubusercontent.com/assets/4955510/3580471/ed3000a6-0bd6-11e4-9c23-69fc8eefefbb.png)

*This sprite set was originally made for NT station's AI, which has an additional button for a feature not present on tg. As such, they are somewhat smaller than the originals.