/**
  * copies either the current order into the shopping cart
  *
  * TO DO: untested
  * TO DO: what to do with old order
  * @param SS_HTTPRequest
  * @return Array
  */
 function copyorder(SS_HTTPRequest $request)
 {
     self::set_message(_t("CartPage.ORDERLOADED", "Order has been loaded."));
     ShoppingCart::singleton()->copyOrder($this->currentOrder->ID);
     $this->redirect(CheckoutPage::find_last_step_link());
     return array();
 }