I don't see any actual changes here, just reordering. It's using the Nix
environment so I'm not sure why this happened but it seemed to stem from
the Norwegian work originally. Fixing it back.
This is my third (!) attempt at implementing localization support.
By leveraging GTK builder to do most of the `gettext` calls, I
can avoid the whole mess about missing symbols on non-glibc platforms.
Added some documentation too for contributors and translators,
just for good measure.
