Added Functioning Gameover

-Gameover is now fully handled by the Gamecontroller
- Running out of fuel now gives you a gameover. Change the rate at which
it runs out in the "Decay" element on the FuelBar
- Added a success function and script, this will eventualy display the
core and a successful message. Right now it just works like game over
- Gamecontroller keeps track of minerals gathered, and it is now
possible to beat the level without moving the arrows during the robot's
movement. You still can for now though

There's an issue that I can't figure out where sometimes you can't move
arrows after dropping them as well. If either of you have an idea how to
fix it give it a shot.

also I have no idea why github decided I needed a new avatar