Shopping carts don't need jacks

Any wheel with ~~a width less than 4 (inches?)~~ NO_JACK flag can be removed with a jack.
Also changed some wheel widths that seemed inconsistent.
Figured that with some motorbikes you need something to keep the bike level, like a jack, so that was the tipping point.

Not 100% on where the wooden and metal wheels width should be.

Edit:
Wheel removal now doesn't consume weld charges if no hacksaw
Width of bicycle wheel = unicycle = wheelchair
Casters at 1 width since they are usually tiny
Small moped wheel slightly wider than bike
Wood and metal wheel width increased by 1 each, to 3 and 4 respectively