Add a hide / unhide checkbox to the select dialogue

[Weta43]

Currently you can use a static template & the select / copy / paste options to (relatively) quickly add a large number of objects, but if you want them hidden on the map you have to individually set all the statics to hidden - & if you've just dropped a hundred static objects on the map that can be a big job.

It would be better to be able to select everything en masse & click 'hidden' (or hidden on planner etc.)

[NoJoy]

+1