v2.7

• added: status icon when discussion is closed and fast action to close/open a topic
• added: a widget to quickly start a discussion (index, dashboard and group context)
• fixed: no tab selected in group listing when group_tools is first activated
• fixed: group admin transfer no longer working for non admins
• changed: performance improvement in group admin transfer
• changed: discussion list now shows in which group the discussion takes place (if not already clear)