Craft recipe continuously

Figured I'd try my hand at enhancement #238. Adds the ability to repeatedly craft a given recipe for as long as you can.

Liquids (in particular, clean water) will still prompt you every time about which container to put the result in, but it seems less annoying now that you don't have to exist the container selection screen.

Cancellation messages could use some work still, I may get to that when I work up the courage/hubris to refactor stuff more than I already have.