Testing revision of new control rods

Initial test of new control rods with temporary UI.
Control rods can be inserted/retracted at 10% intervals (1% internally)
Control rods visually render in the game!
New TESR that's far more efficient than the old one
Removing usage of TileEntityFuelRod, but not yet removing it completely
so as not to break MultiblockReactor.
Lightening fuel texture so you can see the rod inside the fuel.
Miscellaneous cleanup.