2020-03-16 v2.7.2 warn before discarding unsaved work
- lots of gem/package upgrades
- improvement: upgrade mentioning ui, only allow mentioning group, discussion members
- redirect to new group when starting a new user
- new group form can start subgroups
- simpler start group form (update customer survey too)
- feature: add permission: members can delete comments
- feature: warn before discarding unsaved text
- admin pane improvements