Currently translated at 66.5% (185 of 278 strings)

Maybe it is better to describe allowed symbols instead of writing regex?

Currently translated at 46.4% (129 of 278 strings)

After this, it should hopefully not record line numbers anymore,
so the diffs of updatepo.sh runs are smaller. Well, this is theory,
lets see how it will turn out to be in practice.

This reverts commit e4e4324a.

Conflicts:
	po/minetest.pot
	po/*/minetest.po