'Shows the next question.'

def _goNext(self, widg):

    if self.finalQ:
        self._saveEverything()
        return
    if (not self.panel.save_options()):
        return
    quest = self.wizard.next()
    self.prevbtn.set_sensitive(True)
    if (quest is None):
        self._buildFinal()
    else:
        self._buildWindow(quest)
