Added Tinkers Construct mod compat.
Added a BloodChestRepairActionRegistry.
It allows multiple types of repair actions to be used. For example from
external mods.
Added Tinkers' Construct Tool repair action for the Blood Chest.
Merge pull request #81 from rubensworks/version-1.6-0.4.0-tconstruct

Version 1.6 0.4.0 tconstruct