Sender with Last, First causes parse problem in composer: Partial for #5904
Sender with Last, First causes parse problem in composer: Partial for #5904

This handles the case where autocomplete provides an address but the
Send button doesn't go active.  Still keeping the ticket open to handle
the case where the user manually enters such a string (or, more likely,
pastes it in from an external source).

geekvigilante/geary,AtticHacker/geary,githubnemo/geary,robol/geary,mjog/geary,tshikaboom/geary,kpiwko/geary,robol/geary,tshikaboom/geary,emersion/geary,githubnemo/geary,kyoushuu/geary,mpdeimos/geary,emersion/geary,kyoushuu/geary,mjog/geary,aatishnn/geary,robol/geary,mjog/geary,glebihan/geary,aatishnn/geary,glebihan/geary,martinra/geary,aatishnn/geary,emersion/geary,jimbonator/geary,tshikaboom/geary,AtticHacker/geary,rschroll/geary,martinra/geary,martinra/geary,githubnemo/geary,jimbonator/geary,glebihan/geary,AtticHacker/geary,rschroll/geary,jimbonator/geary,MohamedIM/geary-unofficial,abn/geary