Enhance - More messages::add updates (#2662)

convert more messages over to messsagse::add

core/menu/menu_restore_default.php

@@ -66,7 +66,7 @@
 //redirect
 	if (!$included) {
 		//show a message to the user
-		$_SESSION["message"] = $text['message-restore'];
+		messages::add($text['message-restore']);
 		header("Location: ".PROJECT_PATH."/core/menu/menu_edit.php?id=".$menu_uuid);
 		return;
 	}