Implemented the ability to allow the admin to change the cover generation size. (#2213)

Changed how covers are merged together. Now a cover image will always be generated for reading list and collections.

Fixed reading list page being a bit laggy due to a missing trackby function.

Reading list page will now show the cover image always. Collection detail page will only hide the image if there is no summary on the collection.

API/Data/Repositories/CollectionTagRepository.cs

@@ -127,7 +127,6 @@ public class CollectionTagRepository : ICollectionTagRepository
             .Select(sm => sm.Series.CoverImage)
             .Where(t => !string.IsNullOrEmpty(t))
             .ToListAsync();
-        if (data.Count < 4) return new List<string>();
         return data
             .OrderBy(_ => random.Next())
             .Take(4)

API/Data/Repositories/ReadingListRepository.cs

@@ -101,7 +101,6 @@ public class ReadingListRepository : IReadingListRepository
                 .SelectMany(r => r.Items.Select(ri => ri.Chapter.CoverImage))
                 .Where(t => !string.IsNullOrEmpty(t))
                 .ToListAsync();
-        if (data.Count < 4) return new List<string>();
         return data
             .OrderBy(_ => random.Next())
             .Take(4)