#684
Disable all vanilla world types
More getters (I forgot a few) + added names to the AlloyTier enum
forgot to override toString on the enum
Fixed invisible water plant block in creative menu.
Fixed grass sky check for grass, claygrass & peatgrass.
Added a few checks to prevent ArrayIndexOutOfBoundsException.

Fixed the Unknown farmland block. Removed a few debug output lines and
unused code. Fixed WoodHoriz4 not being registered correctly. Added a
check to prevent a potential cast error in TESRIngotPile.
Merge pull request #685 from lipki/chiselStairCorner

#684 - Inversion of status of little cube in BlockDetailed
Merge pull request #690 from dries007/master

More getters (I forgot a few) + added names to the AlloyTier enum
Merge pull request #688 from CHeuberger/fixDisableVanillaWorldTypes

Removed vanilla world types