Add pseudo item to furniture that can be used in crafting
bump savegame version
Egg sacks and spiderlings
Spider Nest basement, A single egg sack on web spider nests, spider eggs for spider mutagen.

Also fixed oversight on the  nutrition value of spider eggs
Changes to spiders  Spiders
Forgot to change the Json file
Forgot to add a brace while fixing the conflict
Changes Ka101 proposed
Bump savegame_version
Fixed missing "i"

Thanks Rivet
Merge furniture-based tools and spider lairs.

Conflicts:
	data/json/furniture.json
Reverse logic of accessable_furniture, looks like it was backwards because accessable_items is backwards.