rPOS sölukerfið

New in this version: Exchanges: take goods back and sell others in a single transaction. Age limits: age-restricted products ask for age verification at payment, including electronic ID through Ábyrg verslun. Refunds: card sales are refunded to the card by default. The refund screen is clearer, and Rapyd sales can be refunded on the card terminal. Discounts: a discount on the whole cart, a reminder about parked orders, and one kennitala per sale. Gift cards: gift cards from the Shopify web store work at the till. Cost prices and margins are visible to managers only. Fixes: Slow Teya card payments are no longer treated as failed. Faster PIN screen and product search. Lists in drawers scroll correctly. Test sales are left out of the day's sales total. Other stability improvements.