Fixes to the Order Flow

- We've become aware of cases, where the auto-completion of active orders when starting a new order including the same product code doesn't work as intended. Therefore, we've decided to disable the feature and are looking into ways of bringing it back in an improved way. - Fix: There was a bug in the single shopper order confirmation receipts, where the order's start and end date were used instead of the specific shopper's start and end date - Fixes an issue where a payment link order which is marked as paid still might expire