disable config validation (closes foodcoops#313)
fix use_messages heading in config screen (closes foodcoops#319)
Make invalid login message depend on use_nick (closes foodcoops#321)
Merge pull request #316 from wvengen/feature/disable_config_validation

disable config validation (closes foodcoops#313)
localeapp roundtrip
Bumped new version: 4.2.0
Merge tag 'tags/v4.2.0'