further optimization of vehicle tick

+ optimization to calculate team energy drain

+ potential improvement to moveautonomous

+ Shotgun - more minor visual tweak - brighter, slightly larger - makes impacts easier to see at a distance

+ another change for turret accuracy

+ potential improvement to stationary turret aiming

+ Performance (and functionality) improvement to HurtRadius. This should work quite a bit better than the old way and is much faster, but requires TESTING

+ extremely minor optimization (removed one divide operation from tick function)