Jenga!

Ingot Piles, Pottery and Food Prep properly break and drop only non-ghost items when the block underneath them is broken.
Ingots now act like log piles in that they must be placed on top of solid blocks, or a full ingot pile.
Removing an ingot from the middle or bottom of a multi-block pile of the same metal results in all ingots above it to merge down (Same behavior as charcoal blocks kinda).
Removing an ingot from a pile that is underneath a pile of a different metal type results in the top pile breaking and the ingot items falling to the ground (Prevents floating ingot piles).

Overwrites c0e2cf83cf9af64c6510163334e0ec50598ad324
I told ArtyomShegeda I was already working on this code and not to touch it.
You may clean it up now if you wish.