Uranus Atmospheric Module Upgrade for Orbiter 2010 1.0

This provides Uranus with an atmospheric module (it has none by default). The module will simulate the atmosphere from 65 bars up to 7765km above that (the exosphere), in 9 distinct layers. As the atmoshphere has not been directly sampled, the module is simpler than my Jupiter one. For more information and technotes please see the PDF.