Allow mailinglist description to be nullable.
It is possible for mailing description to be None, allow the same for Hyperkitty.
Needs rebasing off master for other migration added by Mark.
Closes #211 (closed)
Edited by Abhilash Raj
It is possible for mailing description to be None, allow the same for Hyperkitty.
Needs rebasing off master for other migration added by Mark.
Closes #211 (closed)