tank rotation

[co0p]

rotation calculation is broken. Tank does not rotate around center anymore.

• [x] revert to old render logic
• [x] render should honor scale
• [x] introduce motionControl (see https://github.com/richardlord/Asteroids/blob/master/src/no-dependencies/net/richardlord/asteroids/systems/MotionControlSystem.as)

[co0p]

@jevbelikov please checkout and look at the motionControl demo