Release Shakeout Day 2 (#1594)

* Fixed a bad color on the PWA titlebar

* Added more unit tests, cleaned up some dead code, and made it so when age restriction is Not Applicable, the Unknowns field disables

* Don't show an empty menu when user has no permissions

* Fixed deleting a library with relation causing library deleting to fail

* Consolidated some includes code into one method for Series Repo

* Small fixes

API/Entities/Library.cs

@@ -27,16 +27,4 @@ public class Library : IEntityDate
     public ICollection<FolderPath> Folders { get; set; }
     public ICollection<AppUser> AppUsers { get; set; }
     public ICollection<Series> Series { get; set; }
-
-    // Methods
-    /// <summary>
-    /// Has there been any modifications to the FolderPath's directory since the <see cref="FolderPath.LastScanned"/> date
-    /// </summary>
-    /// <returns></returns>
-    public bool AnyModificationsSinceLastScan()
-    {
-        // NOTE: I don't think we can do this due to NTFS
-        return Folders.All(folder => File.GetLastWriteTimeUtc(folder.Path) > folder.LastScanned);
-    }
-
 }