If master is compiled without QR support, the "Request payment to..." dialog looks ugly
Other minor changes:
- "URI" abbreviation is not translated now
- wallet name is shown if available
This is a backport of core#17597 [1/2]
https://github.com/bitcoin/bitcoin/pull/17597/commits/68288ef0c15522799d4bf6239d2ae1e8086b5abf