Add upstream plugins

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

wp-content/plugins/all-in-one-event-calendar/lib/bootstrap/exception.php

@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * Exceptions occuring during bootstrap
+ *
+ * @author     Time.ly Network Inc.
+ * @since      2.0
+ *
+ * @package    AI1EC
+ * @subpackage AI1EC.Exception
+ */
+class Ai1ec_Bootstrap_Exception extends Ai1ec_Exception {
+
+    public function get_html_message() {
+        return '<p>Failure in All-in-One Event Calendar core:<br />' .
+            $this->getMessage() . '</p>';
+    }
+
+}