- fixed error message when opening or closing the program when GeoLite2 was selected as the Geo-IP service, but no local GeoLite2-City.mmdb file was present.
- added information when selecting GeoLite2 how to acquire the GeoIP database file and falling back to other GeoIP services if missing
- added "ipinfo.io" GeoIP service (online API)
- added "None"-GeoIP service which doesn't try to look up any IPs