"Keep calm and shut the doors" patch

A quick patch with mostly bug-related issues fixed. Hoping to roll out the new transfer chamber this weekend, with added puzzles and alternate endings.

Doors

- Fixed issues with doors unexplicably opening for no reason on certain machines.
- Fixed so that locked doors can not be pried open with draggable furniture.
- Fixed cabinet hinge issues in multiplayer games between linux and non-linux users.

Chess room

- Fixed rotation bug on chesspieces, so they no longer derp around.
- Fixed missing bottom on said chess pieces.

Draggable objects

- Made object physics colliders more stable.
- If objects for any reason disappear from the scene, they will spawn after a short while at their original position.
- Fixed opacity of certain object markings.

Multiplayer

- Fixed some mac-related version control issues on multiplayer.
- The lantern is back (as an experiment, we removed the lantern in multiplayer, but decided to bring it back again.)

Settings and savefiles

- Linux users are experiencing that their files are lost on certain versions, causing save files to disappear. We tried different solutions, and this version includes some linux-only fixes.
- Fixed bug that made toggle-checkbox for fullscreen show the opposite of the reality.
- Fixed some bugs that could case preferences to not be saved.

Misc

- Rescaled some furniture, which proportions to the player was whack.
- Bolted some floating furniture to the ground.
- Added a few riddles.
- Added more high-res artwork. Replaced some old artwork that was either blurry or out-of-style with surroundings.
- Rephrased the clues of the Workshop puzzle.
- Optimized client build size and memory usage.