Consistently use boardTitle instead of board_title for in phrases for various email templates
Fix capturing non-admincp username changes, these are marked as private and do not apply a title change. Compatibility fix with add-ons which allow username changes.
Add "Account self-disable" feature
Staff can not self-disable
User-group permission controlled
Force an (optional) grace period between requesting the disable & applying it, with support to sending a reminder. During this period the account is soft-disabled.
Support cancelling a self-disable request, with a minimum time between attempts
Various options around how to cleanup an self-disabled account