Better insight into multiple payments from OTAs, and offline payments for Manual

VRBO does not automatically take care of collecting payments for hosts. This means hosts are responsible for making sure the guest has paid before their check-in. Displaying whether or not a guest has completed their payment on Hospitable.com would save hosts having to log into VRBO to follwo up on this. This could also be combined with the 'Payment issue' event message to send the guest a reminder to complete their payment.