save(commit=False) doesn't work on TranslatableModelForm

I guest it is normal that it is not working.

But in this case you would except it to work :

    def save(self, app, *args, **kwargs):
        kwargs['commit'] = False
        obj = super(BookingForm, self).save(*args, **kwargs)
        obj.app = app
        del kwargs['commit']
        obj = super(BookingForm, self).save(*args, **kwargs)
        return obj