Adds some reeeeeaaly crude physics simulation.
WIP
Orbits now work, but gravity is still slightly too powerful/weak.  Circular orbits become elliptical, loosing velocity initially right after placed.  The orbital velocity function is PERFECT, so do not fuck with it. (Checks against actual figures for equivalent circumstances)  Otherwise WIP, simulation runs at Ludicrous Speed.
Sueprmatter reactor, and more physics work.  Also: Made the generators work directionally.
More work on the simulation.  The Quadtree is like 99% done, I am still working on making the gravity simulation actually work well.  (THAT MEANS NOT LAG LIKE ASS) (8 planets, with 8 moons and  a star = sadly laggy. :<)

No collision detection yet, but the addition of the Quadtree will help significantly.

Signed-off-by: SkyMarshal <skymarshal1729@gmail.com>
IT WOOOOORRRRKKKSSSSS :D  Simulates at ~1000x speed.  A bit laggy, but that will be cut by a thousandfold running at normal speed.  Collision detection is next, but that should be a breeze now that the tree works right!
More work on flotilla.  Needs more work, still.
WIP Orbital Mechanics.
Blah