[feature request] QR on printed receipe replaceable with own logo/file

[tscharly]

Shouldn´t be a big deal to make QR code on printed receipts changeable with an own logo/file. Variable position over or under printed text would also be cool.

Mod: Field where QR code is shown could load a specific file (or a random file from a folder) from a web url! This makes later tinkering much easier.