lock position, and more

[pelardon]

I often by mistake click on a "wrong" wire and start moving it, then try to find out its original position.
It would be good to have a check-box that would "grey out" XYZ placement, until I uncheck it.

Moreover, I cannot copy the Placement number to another object. Copy and Paste would be great to have on placement.

Moreover too, I can select several circles and give them a common diameter. However, I cannot select several points and give them a common distance to a line. With hundreds of points with the same distance, this seems to be a waste of time.