Add GPL modules

MediaBrowser.Controller/Notifications/UserNotification.cs

@@ -0,0 +1,21 @@
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Model.Notifications;
+using System;
+
+namespace MediaBrowser.Controller.Notifications
+{
+    public class UserNotification
+    {
+        public string Name { get; set; }
+
+        public string Description { get; set; }
+
+        public string Url { get; set; }
+
+        public NotificationLevel Level { get; set; }
+
+        public DateTime Date { get; set; }
+
+        public User User { get; set; }
+    }
+}