Global track thickness setting

When making tracks on a SMD PCBs you always have to shrink every track individually, because the std 24mil is way too thick for such fine parts.

I also find the std track thickness of 24mil hard to move accurately because it obscures fine pads. so you have to create a trace, shrink it, and then move it, which is 3 steps, where as a global setting would only be 2 steps, saving time.