Checklist

• I have searched the issue tracker for open issues that relate to the same feature, before opening a new one.
• This issue only relates to a single feature. I will open new issues for any other features.

Is your feature request related to a problem?

For the QR-code and information dialog we are currently parsing markdown to build the text. We can set the required RichText regiments directly without having to parse a markdown string each time.

Describe the solution you'd like to see.

Set RichText segments directly. Hopefully it means that the markdown parser is dead code eliminates leading to smaller binaries (not sure how tightly coupled it is in Fyne or how smart the Go compiler is there).