show a standard avatar for users, who don't have their own avatar.
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
helptext for default avatar.
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
The old upgrade scripts don't need the avatar_default variable.
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>