- This removes `intllib` depends. I used
https://github.com/FaceDeer/update_translations to convert from existing
translation files (plus manual edit).
- Removed translation string from `minetest.log` calls since translated
string are not printed in console.
- Changed formspec in `barter.lua` to allow longer strings to be displayed
(player names, and longer translated strings).
- French translation improvement.
