Inventory has frames.
Back functionality for HUD buttons/screen movement in general.
Skeleton for Inventory
Reworked ivnentory stage to use a table, inventory now displays there.
Changing HUD to be a table as well. Much easier/cleaner
Moving inventory boxes over for things on the right.
Inventory is nicely spaced out via SpacingActor.
Moving SpacingActor out and letting HUD use it too.