Backport #16916 Duplicate #15987 to allow access to releases download through BASIC authentication. Fix #16914 Signed-off-by: Andrew Thornton <art27@cantab.net>
* Fix various doc, user-facing, and source comment typos Found via `codespell -q 3 -S ./options/locale,./vendor -L ba,pullrequest,pullrequests,readby`
* Add sso.Group, context.Auth, context.APIAuth to allow auth special routes * Remove unnecessary check * Rename sso -> auth * remove unused method of Auth interface