fixes #273 - Marking/unmarking Favorite status doesn't cause a library changed notification

MediaBrowser.Model/Session/UserDataChangeInfo.cs

@@ -0,0 +1,23 @@
+using MediaBrowser.Model.Dto;
+using System.Collections.Generic;
+
+namespace MediaBrowser.Model.Session
+{
+    /// <summary>
+    /// Class UserDataChangeInfo
+    /// </summary>
+    public class UserDataChangeInfo
+    {
+        /// <summary>
+        /// Gets or sets the user id.
+        /// </summary>
+        /// <value>The user id.</value>
+        public string UserId { get; set; }
+
+        /// <summary>
+        /// Gets or sets the user data list.
+        /// </summary>
+        /// <value>The user data list.</value>
+        public List<UserItemDataDto> UserDataList { get; set; }
+    }
+}