v6.0

• added: featured groups can now be selected as a filter tab
• added: you can now search for group members on the group members page
• changed: always return user in group invite autocomplete
• changed: group membership decline from prompt to lightbox
• changed: offloaded group mail sending #65
• changed: tool preset button has title
• changed: refactors a lot of js into amd
• fixed: deprecated use of class var in menuitem factory
• fixed: group default access can be more public than content access
• fixed: group edit visual flickering on load
• fixed: group invite all friends button styling
• fixed: group invite text is now sticky
• fixed: index widget for groups used wrong url
• fixed: js module not loading
• fixed: language key usage
• fixed: not using variable for group check
• fixed: syntax errors
• fixed: user gets notification when removing own group membership request
• removed: show widgets on closed groups
• removed: unused language keys