Host Only Fee Migration Improvement

The initial implementation was helpful, but a bit crude. Lumping fees (especially cleaning) together with the nightly rental into one percentage change took some subtle control away from hosts.

Your default/suggested percentage changed my cleaning fee from $150 to $178, which is both too high for short stays, and kind of weird. I had to reduce the percentage to bring it back down to $175 (less odd, but too high).

Please allow us to define our fees independently from the percentage increase to compensate for the Airbnb host only change.