Add upstream plugins

Signed-off-by: Adrian Nöthlich <git@promasu.tech>

wp-content/plugins/all-in-one-event-calendar/app/controller/exception/file-not-found.php

@@ -0,0 +1,13 @@
+<?php
+
+/**
+ * The exception thrown when an engine is not set..
+ *
+ * @author     Time.ly Network Inc.
+ * @since      2.0
+ *
+ * @package    AI1EC
+ * @subpackage AI1EC.Controller.Exception
+ */
+class Ai1ec_File_Not_Found_Exception extends Ai1ec_Exception {
+}