correct placing for double chests
bug fix: ClassCastException (WindowClickHandler expected GlowInventory; changed => GlowBaseInventory)
bug fix: content of TEChest don't get saved if BlockChest#update() is called
bug fix: NullPointerException in GlowBaseInventory
bug fix: northern/eastern chest is top of inventory (left side in bukkit), southern/western is bottom of inventory (right side in bukkit)
Merge pull request #1 from Tonodus/inventory

Correct placing for double chest, several bug fixes