Feature request - Display installed version number in frontend footer

[Martin511]

As the development runs very fast as I see, I would appreciate to see the installed version number of mini-qr at the bottom / footer of the frontend. It´s just a "nice to have" feature.

Sometimes I hear about new versions of software and it is very handy to just look into the frontend instead of digging deeper to find out what version I´m actually running ;-)