Create list of Trac usernames with email addresses
Since we migrated /some/ users from Trac to Gitlab, it would be useful for us to have a list of each Trac user that have an email attached to their user. We can use this when people write to gitlab-admin@torproject.org and want access to their old Trac accounts on Gitlab. Otherwise, we might end up handing out the accounts to the wrong people and that would be sad.