Reroutes old.reddit... to www.reddit...
// ==UserScript==
// @name Reddit old design redirector
// @description Reroutes old.reddit... to www.reddit...
// @match https://old.reddit.com/*
// @version 0.2
// @author mica
// @namespace greasyfork.org/users/12559
// @license MIT
// ==/UserScript==
location.replace(location.href.replace('/old.','/www.'));