General Cleanup and Bug Fixes

Things are split into multiple files now, with important variables being passed back to init.lua via return statements.

Rack Filler is now spawned every other node, while being made pointable=false and the collision box being made 2 nodes wide.

This has been reverted after the conversion to a LBM.

This should be the last of the "Trying To Deal With MT's Lack Of Large Collision Boxes" problem.