This issue is here to track cleanup of the IronTankType.java class. Its more of a reminder to myself of what direction to take than a concrete TODO list.

• Make variables public final
• Remove useless getters
• Clarify variables through documentation and name refinement where useful
• Investigate removing getBlock() and replacing use in ItemTankChanger.java with net.minecraft.block.Block.getBlockFromName()
• Refactor as TankType.java
• Move class into reference package (looking for feedback on this one)