Cleanup / Fixes / Physics

- rewrote magball and added a camera control script, lots of comments
and cleaner code.
- Modified physics to fix lots of issues, now works frictionless
properly, but allows hard collisions to lower kinetic energy.
- modified controls, LMB is now used for mouse control
- added mouse camera movement, use RMB
- May have screwed up networking
- Added a random decal to the magball
- Fixed ball spin, and slowed spin in air
- numpad '+' and '-' are now used as debug controls for speed increase
and decrease (actually affects total energy) - might need to change if
someone uses a laptop w/o numpad
- modified the test level - mostly one mesh now, smoother and fixes some
weird issues
- added camera tilt while turning
- simplified the up vector calculation somewhat
- turned off rigidbody interpolation for testing, need to turn it on
again