"Pollution Visibility" Map Setting changes on different planets.

[bibizu]

The pollution setting is available on every planet, but really only is needed on two (Nauvis and Gleba), and on Gleba, it is an entirely different pollution-type.

I suggest the pollution button is removed on the map when viewing planets other than Nauvis, and replaced with other icons respective to each planet's gimmick:

- on Vulcanus it is replaced with demolisher territory visibility (a warning similar to the lightning warning on Fulgora could also be implemented when building on demolisher territory to counteract people forgetting to check, but that is a different suggestion. I want to be able to see a little easier underneath the territories).
- on Fulgora it is replaced with the lightning rod coverage.
- on Gleba it is renamed to spore density.

On Aquilo and in Space it should stay greyed out, as there are no mechanics similar to pollution there.