* Create a nwe AddressAndMapLocator which abstracts out the behavior of
selecting a location
* Fix the overlay causing render errors on the MapLocator by getting
rid of the overlay and just using a lock indicator
* Fix MapLocator zooming in to the wrong place by not framing the
markers
* Remove Latlng from platform and just use Location with optional
accuracy
* Use nested types with form-encoded POST
* Fix styles on water report page
This involves rebuilding the "publicreport.report_location" view after
making a bunch of changes to making publicreport.water the consistent
name (over pool) throughout RMA tables.
