Patch 1.3: Various bug fixing and improvements

Fixes:
- Fixed issue with no new pot appearing after you discard or switch pot, and you can't spam-select pots anymore.
- Improved thumbnails and added thumbnails to trees and to mesh variants in the prop controls menu.
- Moving, scaling, or rotating a prop after mirroring does not reset the mirror.
- Fixed the bug with music player disappearing after going back from photo mode.

Features, content & improvements:
- You can now mirror a prop in global world axis as well, not just local.
- Reduced sound delays to make sound effects more immediate.
- Added some goblin-core props (e.g. hanging bones) after players requested it, as well as some other props like a garden planter box.
- Added a button in the prop menu to request new props (opens a form in the browser).
- Added saved notification.

We have also been working on some stuff in the backend systems, but nothing that is visible yet.

Thanks again for all the feedback and bug reports! <3

Cheers, Noodleloop