Description
a number of our users have used their email address as username in p2k16. This is a privacy issue, as your p2k16 username gets exposed several places (example: "Recent events" log in p2k16, contributions logs in the wiki). Due to a bug in the p2k16 / wiki interface users with an email address as the username can't login to the wiki - another issue, but bad as it prevents those user from contributing to the wiki.
Proposal: add feature to p2k16 that allows a user to (or an admin) to change the username of a user in p2k16.
If the proposal fails to be implemented, we should
a) prevent user from using an email address as a username when registering in p2k16
b) manually go through the p2k16 database, make a list of "email as username" users, and manually change the username in cooperation with each user.