Currently the location of a dataset can only be set as a geopoint using the map on the data page. Minimally, it should be possible for the user to type in a lat/lon instead to get higher accuracy than they can from the map. Optionally, something like geojson may be a useful format for input (used in CKAN) and we may want to address data that is associated with a polygon ratehr than a point. (May require additional changes to the map tab for display and/or to the geo-browse app or other code which may assume that non-point data is in the geoserver (not sure).