Only allow owner and admin to delete playlists

MediaBrowser.Controller/Entities/BaseItem.cs

@@ -833,7 +833,7 @@ namespace MediaBrowser.Controller.Entities
             return CanDelete() && IsAuthorizedToDelete(user, allCollectionFolders);
         }
 
-        public bool CanDelete(User user)
+        public virtual bool CanDelete(User user)
         {
             var allCollectionFolders = LibraryManager.GetUserRootFolder().Children.OfType<Folder>().ToList();
 

MediaBrowser.Controller/Playlists/Playlist.cs

@@ -255,6 +255,11 @@ namespace MediaBrowser.Controller.Playlists
             return shares.Any(s => s.UserId.Equals(userId));
         }
 
+        public override bool CanDelete(User user)
+        {
+            return user.HasPermission(PermissionKind.IsAdministrator) || user.Id.Equals(OwnerUserId);
+        }
+
         public override bool IsVisibleStandalone(User user)
         {
             if (!IsSharedItem)