Fixes on MaxMind

Recreating database task for Maxmind City package had a bug where the files to dump into 'maxmind_geolite_city_blocks' and 'maxmind_geolite_city_locations' could be read from wrong sources.
Also, a query to return the coordinates from IP was lacking the latitude and longitude columns, which are the final result of Geocoder.coordinates.
Please correct me if there's something wrong in my two points,
thanks!