More Polish (#2005)

* Implemented sort title extraction from epub 3 files.

* Added link to wiki for media errors

* Fixed the hack to reduce JWT refresh token expiration

* Fixed up a case where favicon downloading wasn't correcting links that started with // correctly.

Added a fallback for sites that just don't pngs available.

* Implemented a mechanism to fallback to Kavita's website for favicons which can be dynamically added/updated by the community.

* Reworked the logic for bookwalker which will fail to get the base html, so we have to rely on the fallback handler.

API/Data/Seed.cs

@@ -144,4 +144,14 @@ public static class Seed
         }
         await context.SaveChangesAsync();
     }
+
+    // /// <summary>
+    // /// Responsible to copy (not overwrite) a set of favicons that Kavita can't parse from websites.
+    // /// </summary>
+    // /// <param name="directoryService"></param>
+    // /// <returns></returns>
+    // public static Task SeedFavicons(IDirectoryService directoryService)
+    // {
+    //
+    // }
 }