Jump Bar Testing (#1302)

* Implemented a basic jump bar for the library view. This currently just interacts with existing pagination controls and is not inlined with infinite scroll yet. This is a first pass implementation.

* Refactored time estimates into the reading service.

* Cleaned up when the jump bar is shown to mimic pagination controls

* Cleanup up code in reader service.

* Scroll to card when selecting a jump key that is shown on the current page.

* Ensure estimated times always has the smaller number on left hand side.

* Fixed a bug with a missing vertical rule

* Fixed an off by 1 pixel for search overlay

API/Data/Repositories/UserRepository.cs

@@ -56,6 +56,7 @@ public interface IUserRepository
     Task<IEnumerable<AppUser>> GetAllUsers();
 
     Task<IEnumerable<AppUserPreferences>> GetAllPreferencesByThemeAsync(int themeId);
+    Task<bool> HasAccessToLibrary(int libraryId, int userId);
 }
 
 public class UserRepository : IUserRepository
@@ -238,6 +239,13 @@ public class UserRepository : IUserRepository
             .ToListAsync();
     }
 
+    public async Task<bool> HasAccessToLibrary(int libraryId, int userId)
+    {
+        return await _context.Library
+            .Include(l => l.AppUsers)
+            .AnyAsync(library => library.AppUsers.Any(user => user.Id == userId));
+    }
+
     public async Task<IEnumerable<AppUser>> GetAdminUsersAsync()
     {
         return await _userManager.GetUsersInRoleAsync(PolicyConstants.AdminRole);