add IsPreShared filed for Group data
add group changed realtime supporting
add some group data
Fix presentation link in mail #1164
update groupchange data
Merge branch 'master' into sharing-pending
Merge branch 'master' into sharing-pending

Conflicts:
	ws_reply_data.go
add change pending invitation email
modify RespondSharingRequest API
Add json - and omitempty
Add withComment parameter to api method
Add more omitempty
add reqeust new key APIs
Merge branch 'qortex-admin'
Merge branch 'master' into sharing-pending

Conflicts:
	data.go
fix param name for clarity
New layout of Left group Sidebar
New layout for group selector
remove validated for CreateEntry
Remove more Validated return values