fixes #789 - Security Issue: API allows access to any folder of the PC running MediaBrowser

MediaBrowser.Controller/Net/IHasSession.cs

@@ -0,0 +1,12 @@
+
+namespace MediaBrowser.Controller.Net
+{
+    public interface IHasSession
+    {
+        /// <summary>
+        /// Gets or sets the session context.
+        /// </summary>
+        /// <value>The session context.</value>
+        ISessionContext SessionContext { get; set; }
+    }
+}