v5.5.4 Beta #2

*Reduced teleporter max energy to 5 megajoules.
*Portable teleporters now teleport to the closest of two teleporters.
*Cleaned up container code.
*Separate types of slots for discharging and charging.
*Fixed multiple generators accepting redstone in their energy slot.
*isStackValidForSlot() support in nearly all blocks.
*Made Electrolytic Separators accept redstone.
*Fixed teleporter console print.
*Fixed high chance for armored mobs.