Add option for "No reply needed" for Booking.com reservations.

Booking.com counts it against hosts if they don't reply in good time to their guests. In some cases a reply is simply not needed. Hosts then have the option to click "No reply needed". This helps them maintain a quick response time. Currently they have to do this directly on Booking.com. It would be very helpful if we could add this to Hospitable.com so that hosts can click that from their inbox there.