Replace "Axle impulse" with "Axle normal force"

[Ivan]

There is something called "Axle impulse" in the information menu. It shows force/sim.frequency. Instead of that, there should be "Axle (normal) force" which gives us the right information.
In the future, Algodoo will probably increase the default sim.frequency. That will make scenes with hinges with impulse break limit not work as intended as they would harder break.

[jon_joy_1999]

Normal already has a use (specifically as a force visualization in the Algodoo for Education edition). I support this concept, but it would need a different name.