Change how blocks/items are registered (desc)

tterrag is a meany face and yelled at me for using class.getSimpleName(). So here's an API-friendly re-work of the registration system. This allows all our Items/Blocks to be obtained via the API. Just add a new enum.

src/main/java/WayofTime/bloodmagic/block/BlockLifeEssence.java

@@ -26,7 +26,7 @@ public class BlockLifeEssence extends BlockFluidClassic
         super(lifeEssence, Material.water);
 
         setUnlocalizedName(Constants.Mod.MODID + ".fluid.lifeEssence");
-
+        setRegistryName(Constants.BloodMagicBlock.LIFE_ESSENCE.getRegName());
         lifeEssence.setBlock(this);
         BloodMagicAPI.setLifeEssence(lifeEssence);
     }