lua fix for entities without catalog data

Fix to menu overlapping other buttons.

Fix to hearthling tracker error when no hearth present.

Added stuck enemy tracking (as with hearthlings and items, a simple topology access check is made between the enemy and a player's hearth; this can yield false positives if the player's hearth isn't placed accessibly or if the enemy is in range/los to ranged attack without needing a full path).

added 10 second delay in reporting things being stuck (in case they quickly become unstuck on their own)

Initial version