Remove barras from QR code scanning pages. Pages can still be accessed there is just no scan functionality. Also replaced deprecated FlatButton widgets.
Type of change
[ ] Bug fix (non-breaking change which fixes an issue)
[ ] New feature (non-breaking change which adds functionality)
[x] Breaking change (fix or feature that would cause existing functionality to not work as expected)
Description
Remove barras from QR code scanning pages. Pages can still be accessed there is just no scan functionality. Also replaced deprecated FlatButton widgets.
Type of change