[ FIXES ]
- Mark room for housekeeping resets after loading the game.
- Employee individual assignment: only tagged shelves deleted (had no effect on the game, instead use the global only tagged shelves).
- Stairs collision and navigation blocking AI.
- Shelves tagging widget not showing all the tags.
- Guest stuck at room and showing a lot of time to wait.
- Some interaction problems (ex: can't take plugs ou the wall).
- Game freezing sometimes.