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

MediaBrowser.Model/Dto/UserItemDataDto.cs

@@ -50,6 +50,12 @@ namespace MediaBrowser.Model.Dto
         /// <value><c>true</c> if played; otherwise, <c>false</c>.</value>
         public bool Played { get; set; }
 
+        /// <summary>
+        /// Gets or sets the key.
+        /// </summary>
+        /// <value>The key.</value>
+        public string Key { get; set; }
+
         public event PropertyChangedEventHandler PropertyChanged;
     }
 }

MediaBrowser.Model/MediaBrowser.Model.csproj

@@ -126,6 +126,7 @@
     <Compile Include="Serialization\IXmlSerializer.cs" />
     <Compile Include="Session\SessionInfoDto.cs" />
     <Compile Include="Session\SystemCommand.cs" />
+    <Compile Include="Session\UserDataChangeInfo.cs" />
     <Compile Include="Updates\CheckForUpdateResult.cs" />
     <Compile Include="Updates\PackageTargetSystem.cs" />
     <Compile Include="Updates\InstallationInfo.cs" />

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; }
+    }
+}