Refactored ItemProjectorModulediagonallyWall into ItemProjectorModuleDiagonalWall.

Commented out lines adding to the HashMap of interior blocks for children of Module3DBase.
        This breaks Field Fusion and Sponge options, as well as anything else relying on the map of interior blocks.
        This also cuts field calculations from 6s to 0.5s.
        This is a stop-gap measure in place for field performance, I intend to rewrite a substantial portion of the logic behind forcefields.

Signed-off-by: Ken Minalien Murray <minalien@gmail.com>