Display friendlier message when options cannot be parsed. Closes #5457.
Display friendlier message when options cannot be parsed. Closes #5457.

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