Ship works, commented code

You can now rotate the ship however you desire, the engine works like it
should, and it's all physics driven.  I've removed everything
RCS-related because it seems silly at the moment and I can re-do it
later if I decide I want it.  The shadow is also gone too because I want
the planets to kill you.  The whole system is bigger now and the player
is more attracted to the planets.  Speaking of which, there is now a
bright flashing GUI proximity warning when you're too close to a planet.
I commented all the code, too.