Add a way to translate country names

[NathanBnm]

Maybe with a matching list?

[louis77]

I've found a free database of translated country names here: https://github.com/mledoze/countries
(see countries.json).

Would you recommend to use PO to provide that country names or let the application handle the translation via a local mapping file?

[NathanBnm]

I think it would be fine to use this database but there are not all the available languages. Maybe there can be some file in the app, kind of an enumeration which makes the list in English and can be added to po files. What do you think?

[louis77]

Work on this has begun. With the commit 96f9407 there is a file /src/Models/Countries.vala which contains a map with all country names as translatable strings.

The list was generated from here:
https://datahub.io/core/country-list#data

[NathanBnm]

This can be closed according to #37 Don't know why it didn't close itself