title.gettext add performed by owner does not need authentication (notification)

is_owner([listname],[sender])  smtp,dkim,md5,smime -> do_it,notify
is_listmaster([sender])        smtp           -> request_auth
is_listmaster([sender])        dkim,md5,smime      -> do_it,notify
true()                         smtp,dkim,md5,smime -> reject(reason='add_owner')	

