Mopped the Flinger

Yeah, so I think the rest of my commits will be like this. Like cleaning
up the robot one subsystem at a time... and then autonomous and the
other tiny things. Made ShootCommand a LOT more simpler, killed
Constants and ConstantsBase classes, and took that irritating little
ShootCommand out of Ballbasaur. Actually important change to code:
SAFETY IS NOW A TOGGLED BUTTON. And something needs to be done about
private.xml...