Currently translated at 30.0% (226 of 753 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.

fixed some mistakes and added in some new translations

This reverts commit e4e4324a.

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