Added: Localization for a error and the ability to name the Alchemical Bag's GUI

1. Localized Can\'t dye non-bags! (Also made the .xml look fancy, by
adding some comments :D). I saw the TODO and could not resist :P

2. Made it possible to change the name of the Alchemical Bag's GUI to
match that of the Item.

Note: I restored the Alchemical Chest to Its original state(In case
Pahimar just didn't like the block bounds).