Request: move one control point menu item

[chir.set (SET)]

@muratmaga

repeat the operation a few times (undo/redo), notice that one by one the points start to disappear from the list.

On repeat Undo/Redo after removing a fiducial node with 3 points, I do not see the points disappearing.

I noticed something else:

• create a Fiducial node with 3 points
• delete the node
• Undo
• Undo again : the third point is removed in the Markups module, but still persists in a slice view, being non-interactive. The first and second points become non-interactive also.
• Redo - the third point reappears in the Markups module, and all three points become interactive in the slice view.

@muratmaga

But it is such a critical features, I think we should harden and incorporate into the core, as opposed to keeping at a snippet.

It seems to be N° 1 in the feature request section.