Translations of Tryton Desktop Client for Windows

Most of translations are in data\locale folder of Tryton Desktop Client.
But there are still translations in share\locale folder (mo-files only).
Where can we get the relevant po-files?

These are the translations of the embedded libraries. You should find the po file on each project.

We are interested in gtk 3.0 library.

Do we need to get the po-files from here?