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/item/ItemLavaCrystal.java

@@ -19,6 +19,7 @@ public class ItemLavaCrystal extends ItemBindable implements IFuelHandler
     {
         super();
         setUnlocalizedName(Constants.Mod.MODID + ".lavaCrystal");
+        setRegistryName(Constants.BloodMagicItem.LAVA_CRYSTAL.getRegName());
         setLPUsed(25);
     }