Add city and country to the Geoclue location backend

[tpikonen]

Description

The Geoclue location backend does not return city and country info, but you can use Geocode-glib for that. This would bring the Geoclue backend to parity with the other backends.

[romanlefler]

Thanks for the request, I should be able to look into it next week.

[romanlefler]

I have a little sample of it on 5d05c63 but for some reason whenever I run it right now I get an Internal Server Error. I'll see if I can somehow fix it but I might not just end up having an option to have the extension directly ask Nominatim instead of using geocode glib.