Actual Quantity not always rounded
From https://discuss.tryton.org/t/invalid-number-of-digits-in-purchase-order/5274/. The sum of rounded quantity is not necessary a rounded value thanks to float. So we must round only at the end.
From https://discuss.tryton.org/t/invalid-number-of-digits-in-purchase-order/5274/. The sum of rounded quantity is not necessary a rounded value thanks to float. So we must round only at the end.