Added new shaders that fade out the edge of the cloud layer in order to remove the hard edge of the clouds against the sky. Special thanks to Sytner for figuring out the math and method required to fade out the texture at a distance.
-Fixed an issue with Tatooine's sky gradient having a bright white color underneath the horizon.
-Corrected a naming issue which was causing at least one of the cloud textures from several planets not being appropriately replaced. This will significantly increase the quality of skies.