Community authentication 1.0 relied on PostgreSQL connections between
all servers, and hasn't been used for years.
This includes removing the code that migrates users from the old
community authentication system to the new one. This means that any user
who has not logged in since 2011 will no longer be able to user their
oan account, and have to create a new one.
Some users are registered with just a username and no actual name. The
old way only dealt with users with just first or last name - not the
ones completely without name.
