code: function attachRedirect(router, { path, redirect }, site) {
    redirect = normalizeRedirectPath(redirect, site);
  
    return router.get(path, (req, res) => {
      res.redirect(301, redirect);
    });
  }
docs: Attaches a route with redirect to the router.
  @param {Router} router
  @param {Object} route
  @param {String} route.path
  @param {String} route.redirect
  @param {Object} site
  @return {Router}