Build 39 (development version)

Minecraft 1.6.4

- Add crafting station (work in progress)
- Fix NPE when disabling enchantments
- Fix storage crate issues
- Fix incorrectly synced "contains items" state of backpacks
- Chance Thaumcraft recipe description
- Add "vis discount" display to Thaumaturge's Backpack

Cardboard related:
- Change cardboard sheet recipe
- Increase durability of cardboard items
- Cardboard items don't break completely
- Cardboard items can't be enchanted or repaired
- Remove cardboard enchantment recipe