Remove unnecessary space in icon-only toolbar btns: Closes bgo#713837
Remove unnecessary space in icon-only toolbar btns: Closes bgo#713837

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