Plot course

[BrianErikson]

This merge adds:

• three new planets
• thirteen new moons
• Planets and moons are now streaming from the server
• Client and server are now syncronizing over the server's system clock and julian date
• Simple UI added to facilitate course trajectories
• Trajectory REQUEST protocol
• Orbit rainbowing to add some interesting patterns
• Server simulation time is now three days per second
• Slowed the orbits of moons to be a half-revolution per second minimum