Add a confirmation dialogue to the unlink process
Add a confirmation dialogue to the unlink process

This makes it harder to accidentally remove a linked Individual now that the
“Unlink” button is easier to find, and also makes it more obvious that
Empathy hasn't just crashed when unlinking. Helps: bgo#628377

GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,Distrotech/telepathy-account-widgets