v11.0

• changed: group owner transfer uses core options
• changed: increased minimal Elgg requirement to 3.2
• changed: listing of e-mail invitations uses annotation view
• changed: membership requests use core functionality
• changed: site join events moved to user creation events
• fixed: admin approval of groups
• fixed: plugin priority issue with profile manager
• fixed: send custom text when adding users
• fixed: user e-mail invitation listing
• removed: default group content access
• removed: group invites page for roup admins