SkyTemple

Bugfixes:

• Fixed that is was possible to try and import/export animated tiles when no BPA was activated. A proper error explaining this is now shown.
• Fixed that it was not properly saved if BPAs were enabled or disabled for map backgrounds, causing bugs and inconsistencies in both SkyTemple and the game.
• Fixed an error "Type error (null)" when SkyTemple reloaded views (eg. after applying sprites or patches) under certain circumstances.
• Fixed that in the SpriteCollab browser it was possible to select a new entry, while another one was still loading, causing inconsistencies which sometimes required SkyTemple restarts to fix
• Fixed that few special items in fixed rooms could not be rendered and prevented the room from loading correctly, locking up SkyTemple with a spam of error messages.
• Fixed that it was possible to import map backgrounds with less than 16 palettes which SkyTemple and the game are not compatible with / not expecting in some cases, leading to crashes in-game and error messages when trying to open the map in SkyTemple.
• Fixed exporting BPAs that have no tiles.
• Fixed and improved various internal error reporting.