[Bug 1414174] [NEW] add audit trail for user management changes

Public bug reported: Add audit trail for user subscriptions. Who added them? What checks were made? From http://wiki.mailman.psf.io/DEV/Mailman%203.0?action=diff&rev2=30&rev1=28 -- a TODO for the Mailman 3.x series. ** Affects: mailman Importance: Undecided Status: New ** Tags: mailman3 -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/1414174 Title: add audit trail for user management changes To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1414174/+subscriptions