Change all license headers to comply with REUSE specification.
Fix#16132
Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
A pr.Reviewer may be nil when migrating from Gitea if this is a team
request review.
We do not migrate teams therefore we cannot map these requests, but we can
migrate user requests.
Signed-off-by: Andrew Thornton <art27@cantab.net>
