Added rendering effect to dimHatch
Renamed TileEntityDimHatch

Renamed TileEntityDimHatch to TileEntityTransTrapdoor. That matches the
name of the item we use in other parts of DD's code.
Finished Merging Changes to Trapdoor

Merged together the different changes we had made to Transdimensional
Trapdoors. Cleaned up the rendering and tile entity code a bit, it
should be a little more understandable now.