"Selectable" checkbox for pipeline items
Add an option for all "items" in the ParaView pipeline to be either "selectable" or not. If not selectable, they would simply ignore any selection actions that are applied in any view window.
Purpose: If several graphic items are displayed in a render view, it may be desirable to apply selections only some of them and to others not. Like one graphical object that needs selections, while a second is displayed only for orientation and should not interfere with the action.