Option to geocode all locations that lack lat/long

It's easily possible to build up nodes that haven't been geocoded. I got mine through using node import to directly imported and old database of contact info into my drupal database. Another way to do it would to have had Locations setup up for some time, and only later adding geocoding. In any case it's not unusual to find yourself with lots of locations that lack geocoding.

It would have been helpful to me to have been able to click a button that would go through the database's location, find those locations that lack geocoding, and add the lat/long.