[0.8][minor] Rare first mission script bug

[FrozenOne]

In first demo mission, if you build the drill in such a way that it puts coal directly into a furnace, it starts talking about wooden chest nicely done. It skips some steps and you cant finish the mission from there as you have no wooden chest.

[slpwnd]

Thanks for the report, this will be fixed in the 0.8.1.