* Fixed up a localization lookup test case
* Refactored some webp to a unified method
* Cleaned up some code
* Expanded webp conversion for covers to all entities
* Code cleanup
* Prompt the user when they are about to delete multiple series via bulk actions
* Aligned Kavita to OPDS-PS 1.2.
* Fixed a bug where clearing metadata filter of series name didn't clear the actual field.
* Added some documentation
* Refactored how covert covers to webp works. Now we will handle all custom covers for all entities. Volumes and Series will not be touched but instead be updated via a RefreshCovers call. This will fix up the references much faster.
* Fixed up the OPDS-PS 1.2 attributes to only show on PS links