Added sword input via controller.

Sword controlled by joystick. Rotation in joint follow script now
commented out.
Changed the name of SwordInput to SwordController.
Created a GameState singleton class for the overall game loop.
Updated the InputManager to get Y-axis input from the controller.
Set up a LightBox script for the scorebox light states.

Off, red, green, and greenAndRed.
Created SwordTip script to handle sword tip collisions.
Lots of changes to the scene and such...

Yes, I know, not the most helpful commit message.