Add feature to label stored QR-Codes

[Wernfried]

It would be helpful if you can add a label to the stored (i.e. historical) codes. The app shows only the scan date and time, so it can be difficult to identify your scans.
Typical use-case is when you scan a ticket. You buy a ticket, you scan the QR-Code and a few days later you go to the event, show, etc. Then it can be difficult to find the QR-Ticket from the history without having any label.

[splisp]

+1