Fixing a bug in compareExistingImages

Closes #4847

See merge request !11575

Fixes an uncaught exception in compareExistingImages.
App.Art.GenAI.imageDB.getImage may returns a undefined and causes an
error in compareExistingImages if the db is purged. Fixes #4847.

Generate hair when slave wears wig

See merge request pregmodfan/fc-pregmod!11573

Fixes & cleanup

See merge request pregmodfan/fc-pregmod!11572

Some linting and type fixes.

Fixes condition in Language Lesson event

See merge request !11571

Tweaks to multi-image mechanism for AI images.

See merge request !11569

1. Remove the old refresh-retry functionality which is no longer used.
2. If the user clicks "replace" and there are no images stored yet, go ahead and add one (just like left or right navigation would).
3. Permit dead images to be deleted without throwing (whether that's because the user purged the cache or cleared their browser data or whatever, they need to have a way to remove them from the list).
4. Fix some linting stuff (space/tab mixing, semicolon placement, etc).
5. Force a game update, and don't try to fix obsolete slave data in the renderer (always do it in the update instead).

Store and display multiple AI images

See merge request !11563

Allow the PC to take his/her own virginities with a dildo

See merge request !11568

Fix better

Closes #4837

See merge request !11567

Fixes

Closes #4837

See merge request !11566

Add penetrative skill

See merge request !11564

Fixes for fucktoy use preference selection

See merge request !11565

Fix fucktoy use preference being unavailable on the Concubine, remove stray underline styling from fucktoy use preference, and do a bit of cleanup.

Add missing file

Closes #4833

See merge request !11562

Custom per-slave prompting for AI Art

Closes #4815

See merge request !11561