Added an api call to pull down user configuration

MediaBrowser.Common/Configuration/UserConfiguration.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Common.Configuration
+{
+    /// <summary>
+    /// This holds settings that can be personalized on a per-user, per-device basis.
+    /// </summary>
+    public class UserConfiguration
+    {
+        public int RecentItemDays { get; set; }
+
+        public UserConfiguration()
+        {
+            RecentItemDays = 14;
+        }
+    }
+}