v2.2

• added: featured group widget
• added: a index widget (for Widget Manager) to show the latest discussions
• added: widget title link for group membership (in combination with Widget Manager)
• added: option to invite all friends or all site members (admin only)
• fixed: outstanding invitations and membership request not always cleaned up
• fixed: incorrect widget title for group members
• fixed: deprecated notices in combination with widget_manager
• fixed: pagination in group members widget
• fixed: wrong action link in remove invitation
• fixed: bug with creating group invitations
• fixed: PHP notices and warnings
• changed: sending of group invite e-mails to be more generic
• changed: restored limited functionality of group activity river