PQS haze layer changeup & Cloud layers as masks

Removed all previous low haze layers.
Introduced two alternative layers above highest point to prevent clipping, horizon line more obvious now.
Introduced dynamic sky darkening with altitude through two PQS layers: Edge haze w/fall off to black and falloff above blue sky, and flat(non-inverted) blue sky w/ falloff bellow edge haze. Both layers above PQS end alt to prevent weird glitches passing through.
New PQS haze added to SS.
Introduced transparent cloud detail textures to use global clouds as mask (kinda works) developing new textures for Alto detail.
Introduced previously redundant 4k Cumulus cloud layer with Hurricanes/Cyclones.
Temporary use of old experimental AltoCumulus cloud layer (doesn't work well) Gonna go back to 8k 'Kerbin1' text for Alto layer.
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