Compatibility update for dev branch. Stable branch compatible too.

One of 4 cloud layers removed from Earthlike planet, amount of unique models of flora reduced.

Updated to the latest game version. removed vanilla textures due to game fixes

-Added instruction for mod, updated with latest game version, rocks generation is not affected by mod anymore. Added "Planet" category to mod

-Added vanilla textures of Earthlike and Alien planets due to bug not allowing to use game textures from it's own directory