Bulk Add to Collection (#674)

* Fixed the typeahead not having the same size input box as other inputs

* Implemented the ability to add multiple series to a collection through bulk operations flow. Updated book parser to handle "@import url('...');" syntax as well as @import '...';

* Implemented the ability to create a new Collection tag via bulk operations flow.

API/Data/UnitOfWork.cs

@@ -34,6 +34,7 @@ namespace API.Data
         public IFileRepository FileRepository => new FileRepository(_context);
         public IChapterRepository ChapterRepository => new ChapterRepository(_context, _mapper);
         public IReadingListRepository ReadingListRepository => new ReadingListRepository(_context, _mapper);
+        public ISeriesMetadataRepository SeriesMetadataRepository => new SeriesMetadataRepository(_context);
 
         /// <summary>
         /// Commits changes to the DB. Completes the open transaction.