* Added: Mention group members in the Discussion wall
* Added: Integration with Real-time Notifications > "Groups - New mention" notification
* Fixed: Displaying "Notifications Account Tab" setting
* Fixed: DB update for old 'um_groups_last_active' meta maybe stored not in GMT
* Fixed: Stored 'um_groups_last_active' meta in GMT
* Fixed: Escape and sanitizing data in templates or form submission
* Fixed: Made redirect safe
* Fixed: The "Join group" button for guests
* Fixed: Case when extension isn't active based on dependency, but we can provide the license key field
