Remove indev ore generations

(Minetest_game / Carbone)
tweak the breathless sound

(-10 decibel)
Add a Sun and Moon default texture
Update minetestforfun_game with minetest_game
- I hope there is no problem. I see a lot of new stuff in the vanilla
  game. I keep a backup on another computer to restore the state of the
  repository if there is a problem.