Due to an influx of spam, we have had to temporarily disable account registrations. Please write an email to firstname.lastname@example.org, with your desired username, if you want to get access. Sorry for the inconvenience.
Return null instead of the string "None" in username_from_id(),
uid_from_email() and uid_from_username().
Signed-off-by: Lukas Fleischer <email@example.com>