ide: dialog to ask whether to save or not before quitting
ide: dialog to ask whether to save or not before quitting

jpdeplaix/why3,douglas-larocca/why3,jpdeplaix/why3,douglas-larocca/why3,jpdeplaix/why3,douglas-larocca/why3,ssaavedra/why3,ssaavedra/why3,ssaavedra/why3