add image editing to library setup

MediaBrowser.Model/Entities/VirtualFolderInfo.cs

@@ -33,6 +33,12 @@ namespace MediaBrowser.Model.Entities
             Locations = new List<string>();
         }
 
+        /// <summary>
+        /// Gets or sets the item identifier.
+        /// </summary>
+        /// <value>The item identifier.</value>
+        public string ItemId { get; set; }
+
         /// <summary>
         /// Gets or sets the primary image item identifier.
         /// </summary>