Expose Geocoder handler-specific settings in views filter

Geofield provides a views proximity filter. It is implemented by calling into the geocoder module.

Geocoder module allows a choice of different geocoder handlers: google, bing, yaoo, yandex, etc. Each handler may provide handler specific settings. On the geocoder widget form, you can choose a handler, and then set the handler-specific settings. You also see a link to the terms of service for the handler.

Geofield proximity filter allows you to choose the handler. However it is missing the form for the handler-specific settings, and missing the link to the terms of service. Patch upcoming adds these missing elements.