Import translations from Endless
Much of this code previously lived in Endless's fork of gnome-control-center, and so many strings had previously been translated there. I imported a bunch of them from https://github.com/endlessm/gnome-control-center/tree/eos3.7 as follows:
cp ~/src/endlessm/gnome-control-center/po/LINGUAS po
ninja -C _build/ meson-malcontent-update-po
for x in po/*.po; do
t3k copy ~/src/endlessm/gnome-control-center/$x $x
done
ninja -C _build/ meson-malcontent-update-po
Then manually reviewed the output from t3k to exclude languages where only trivial translations such as "Help" were copied.
(t3k
is https://gitlab.gnome.org/wjt/translate-o-tron-3000/.)