* Add username check to doctor
- Add a new breaking change detector to Gitea's doctor, which checks if
all users still have a valid username according to Gitea. Given from
time-to-time we need to make changes, either due to new routes or due to
security, it's for a instance's admin to check if all users still have a
valid username.
* Fix extra argument
* Apply suggestions from code review
Co-authored-by: Jimmy Praet <jimmy.praet@telenet.be>
* Apply suggestions from code review
Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: Jimmy Praet <jimmy.praet@telenet.be>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
Co-authored-by: techknowlogick <matti@mdranta.net>
Co-authored-by: delvh <dev.lh@web.de>