Another Furniture

Added Shutters, basically sideways trapdoors, but can connect up+down, and connected shutters open at the same time.

Added Planter Boxes, which allows you to plant 2 flowers in them. Come in floor + wall connected variations.

Added Curtains, which wave in the "wind" and can be opened and closed. If joined in a 2x2 or 3x2, opening one curtain will open the others that are joined.

Added Service Bell, it goes dingdingdingdingdingdingdingdingdingdingding.

Chairs can now be tucked under tables using shift-right click.

Increased output of amount of items given when crafting furniture