Add some kind of "not on map" visual indication to search result list entries that are not on the map

[anselmbradford]

Some entries in the result list are not on the map because they don't have coordinates, however, when there are many results per page it would be nice to know which locations in the results list you can look for on the map and which you can't.

Particularly when the top-most entry isn't on the map is can be confusing when clicking it and it doesn't have a map on the detail page.

A greyish bit of text with (maybe) an icon would do.