* Added: Rewritable templates
* Added: Invites notifier in Profile menu
* Added: Shortcode [ultimatemember_group_comments]. This shortcode returns block, that contains posts with the latest comments.
* Added: Shortcode [ultimatemember_group_members]. This shortcode returns block, that contains group members list.
* Fixed: Database column `date_joined`
* Fixed: Load more comments
* Fixed: Shortcode [ultimatemember_group_discussion_activity] can be used on any custom page
* Fixed: Shortcode [ultimatemember_group_discussion_wall] can be used on any custom page
* Tweak: Changed all user groups tabs to Member Directory class
