unsaved = request.session.get('previewing_settings', {})
context['unsaved'] = set([getattr(settings, s).set.name for s in unsaved.keys() if hasattr(settings, s)])
unsaved = request.session.get('previewing_settings', {})
context['unsaved'] = set([getattr(settings, s).set.name for s in unsaved.keys() if hasattr(settings, s)])