Misc Bugfixes (#1378)

* Fixed an issue where sometimes when loading the next page, the pagination area wouldn't be properly setup due to a missed rendering cycle

* Refactored BookController to thin it out and refactor some of the functions to apply IOC. Added some split query statements on a few queries.

* Added Split Query to many queries

* Added a visual indicator for loading state of PDF. Will spruce up css later.

* Added back in logic

* Fixed flash of white when refreshing browser

* Hooked in a loading progress bar for the pdf reader

* Close the pdf reader when pressing ESC

API/Data/Repositories/LibraryRepository.cs

@@ -169,6 +169,7 @@ public class LibraryRepository : ILibraryRepository
             .Include(f => f.Folders)
             .OrderBy(l => l.Name)
             .ProjectTo<LibraryDto>(_mapper.ConfigurationProvider)
+            .AsSplitQuery()
             .AsNoTracking()
             .ToListAsync();
     }
@@ -200,7 +201,7 @@ public class LibraryRepository : ILibraryRepository
             query = query.Include(l => l.AppUsers);
         }
 
-        return query;
+        return query.AsSplitQuery();
     }
 
 
@@ -259,6 +260,7 @@ public class LibraryRepository : ILibraryRepository
             .Where(library => library.AppUsers.Contains(user))
             .Include(l => l.Folders)
             .AsNoTracking()
+            .AsSplitQuery()
             .ProjectTo<LibraryDto>(_mapper.ConfigurationProvider)
             .ToListAsync();
     }
@@ -283,6 +285,7 @@ public class LibraryRepository : ILibraryRepository
         var ret = await _context.Series
             .Where(s => libraryIds.Contains(s.LibraryId))
             .Select(s => s.Metadata.Language)
+            .AsSplitQuery()
             .AsNoTracking()
             .Distinct()
             .ToListAsync();
@@ -302,6 +305,7 @@ public class LibraryRepository : ILibraryRepository
     {
         return  _context.Series
             .Where(s => libraryIds.Contains(s.LibraryId))
+            .AsSplitQuery()
             .Select(s => s.Metadata.PublicationStatus)
             .Distinct()
             .AsEnumerable()
@@ -313,5 +317,4 @@ public class LibraryRepository : ILibraryRepository
             .OrderBy(s => s.Title);
     }
 
-
 }