'EmailAuthRequireToken': Require login verification via an emailed token (and optionally modify
  the messaging).
$user: The user trying to log in.
&$verificationRequired: (bool) Change this to true to enable verification.
&$formMessage: (Message) Message telling the user they need to do an extra verification step.
&$subjectMessage: (Message) subject of the email with the verification code
&$bodyMessage: (Message) body of the email with the verification code; last parameter must be the
  token and will be set later