Removed planetary moons, made planets even larger, changed star generation

Moons orbiting planets were buggy, so I removed them. I made the planets a bit larger, so it is harder to see the curvature on the surface of them. I made it so that star generation is no longer random, but is based on PHL's Exoplanet Catalog, containing a massive list of information on stars and exoplanets.

http://phl.upr.edu/projects/habitable-exoplanets-catalog/data/database