More Alchemical Chest/Inventory stuff
Prevented crash when right-clicking the aludel

Checks if the stack is null before attempting to get the item ID
Fixed #559
Merge pull request #560 from monster860/master

Fixed #559
Merge pull request #558 from klmDF14J/master

Prevented crash when right-clicking the aludel
Condensed the Alchemical Chest GUI/inventory stuff
Just some more Alchemical Chest stuff :)