plugin security fixes and other abstractions

MediaBrowser.Server.Implementations/Sqlite/SQLiteItemRepository.cs

@@ -3,6 +3,7 @@ using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Persistence;
 using MediaBrowser.Model.Logging;
 using MediaBrowser.Model.Serialization;
+using MediaBrowser.Server.Implementations.Reflection;
 using System;
 using System.Collections.Generic;
 using System.Data;