Re-add config support for custom compacting rules

Fix left/right reversed slots for some directions in some map quadrants

Skip processing blocks if null

Fix stack limit calculation

Fix lang keys

Drawers no longer spill items by default (toggleable in config). Pack…

…ing tape is redundant when this option is on, but ehh...

Drawers no longer spill items by default (toggleable in config). Pack…

…ing tape is redundant when this option is on, but ehh...

Merge pull request jaquadro#665 from codewarrior0/locked-drawers-losi…

…ng-reservations-redux

Fix jaquadro#664 - Locked drawers appear to lose reservations

Fix dupe issue with container objects being dropped in single stack

Fix for compacting drawers saving invalid state if one of the items w…

…as removed from the game