Removes falling over in space

You can still be stunned, slip (unfortunately), be pushed, or die; your icon just remains upright to simulate zero gravity. Upon being dragged into the station, your body thumps to the ground inside the airlock. It's pretty neat. It also makes retrieving bodies from space a lot easier, as they can be pushed around due to being upright.

Code by the talented Lolbertarian Razharas.

I've tested this thoroughly.