Misc Fixes and Changes (#927)

* Cleaned up a ton of warnings/suggestions from the IDE.

* Fixed a bug when clearing the filters some presets could be undone.

* Renamed a class in the OPDS spec

* Simplified logic for when Fit To Screen rendering logic occurs. It now works always rather than only on cover images.

* Give some additional info to the user on what the differences between Library Types are

* Don't scan .qpkg folders (QNAP devices)

* Refactored some code to enable ability to test CoverImage Test. This is a broken test, test.zip is waiting on an issue in NetVips.

* Fixed an issue where Extra might get flagged as special too early, if in a word like Extraordinary

* Cleaned up the regex for the extra issue to be more flexible

API/Services/CacheService.cs

@@ -171,7 +171,10 @@ namespace API.Services
             var path = GetCachePath(chapter.Id);
             var files = _directoryService.GetFilesWithExtension(path, Parser.Parser.ImageFileExtensions);
             using var nc = new NaturalSortComparer();
-            files = files.ToList().OrderBy(Path.GetFileNameWithoutExtension, nc).ToArray();
+            files = files
+                .AsEnumerable()
+                .OrderBy(Path.GetFileNameWithoutExtension, nc)
+                .ToArray();
 
 
             if (files.Length == 0)