fixed db disposals

MediaBrowser.Controller/IServerApplicationHost.cs

@@ -3,8 +3,15 @@ using MediaBrowser.Model.System;
 
 namespace MediaBrowser.Controller
 {
+    /// <summary>
+    /// Interface IServerApplicationHost
+    /// </summary>
     public interface IServerApplicationHost : IApplicationHost
     {
+        /// <summary>
+        /// Gets the system info.
+        /// </summary>
+        /// <returns>SystemInfo.</returns>
         SystemInfo GetSystemInfo();
     }
 }