Make probe light maps only render using entities marked as Static.

[bryanedds]

Right now everything gets rendered into light maps.

To proceed, let's add the information needed to filter based on staticness to the render message that might need them. Most render messages however won't since they can be assumed to be static (terrain, skybox, etc).

[bryanedds]

Let's link this so we can do both at the same time -

597

[bryanedds]

Done.