Changing RViz behavior: toggling things on and off

Totally understandable, its old software and pushing ROS2 is the right thing to do. I don’t think people would be happy if we change the display checkbox to no longer reset, but don’t provide a new way to reset. I haven’t thought of a way to add new reset functionality without changing ABI, but if you have ideas I’m all ears.

I don’t use ROS2 yet, so I can’t justify spending time on that right now, but when I do switch I will probably do so.