GitLab

Also fixed the error in the moonshader.

some reorganization of the planet-shaders to improve code-reusability and easy adding of differently looking planets

Conflicts:
	data/shader/terrain/mountainTexture.glsl

slight change of displacement calculation for terrain height, to give the planet parts with more and parts with less water

slight change of displacement calculation for terrain height, to give the planet parts with more and parts with less water

(lod doubled for tests)

switched terrain to use simplex noise now (and to use noise from files mentioned above, no own noise implementation in DispMapping shader anymore)