Improve distance of outline/cell shading

[emoose]

Outline stops being drawn on NPCs after just a few meters, would be nice to increase the distance.

Two cvars seem to be distance related: r.SkeletalMesh.OutlineMaxLOD & r.StaticMesh.OutlineMaxLOD, but changing them doesn't seem to make much difference at all (didn't notice any difference whatsoever :/), fortunately there is code actually checking them though, so that might be a good lead on where the outline checks are done.