Remove some notices/warnings. refs #1650

@@ -39,6 +39,18 @@ class HierarchicalMenu implements Countable, Iterator {
 
                 $last_id = $item->ID;
             } elseif ($item->menu_item_parent == $last_id) {
+                if (!property_exists($this, 'contents')) {
+                    $this->contents = array();
+                }
+
+                if (!isset($this->contents[$this->id_lookup[$last_id]])) {
+                    $this->contents[$this->id_lookup[$last_id]] = new \StdClass;
+                }
+
+                if (!property_exists($this->contents[$this->id_lookup[$last_id]], '_children')) {
+                    $this->contents[$this->id_lookup[$last_id]]->_children = null;
+                }
+
                 $this->contents[$this->id_lookup[$last_id]]->_children = true;
                 $this->contents[$this->id_lookup[$last_id]]->classes[] = 'menu-item-children';
                 $nest[] = $last_id;

@@ -201,7 +201,7 @@ function send_triggered_notification($uid = 0, $trigger = "NO_TRIGGER", $args =
         $notification->trigger   = $details['trigger'];
         $notification->status    = isset($details['status']) ? $details['status'] : "active";
         $notification->type      = $details['type'];
-        $notification->sendto    = $details['sendto'];
+        $notification->sendto    = @$details['sendto'];
         $notification->is_email  = (($email['text'] != "" || $email['html'] != "") && $email['subject'] != "") ? true : false;
         $notification->is_system = (isset($system['message']) && $system['message'] != "") ? true : false;
 
@@ -255,7 +255,7 @@ function send_triggered_notification($uid = 0, $trigger = "NO_TRIGGER", $args =
 
             $from_email = get_bloginfo('admin_email');
             $subject    = strip_tags($contents['subject']);
-            $html       = $contents['html'];
+            $html       = @$contents['html'];
             $alttext    = strip_tags($contents['text']);
 
             foreach ($args as $key => $val) {