wip (dont merge yet) : Autoscooping

1. Removes orbit choices : medium and high
2. Adds orbit choise scoop orbit 
3. cosmetic gas giant atmosphere changes (10 times bigger but dark gray) Saturn looks fatastic :)
4. Add avgtemp to all generated non custom gas giants to make them more sccopfriendly.
5. Reactionmass is now hydrogen instead of water, reason is that you can refuel for both insterplanetary and interstellar in one go.

ping @fluffyfreak also if pioneer wants to resuse some of this.