uses planetArray instead planetList
adds visible orbits
removes use of randum orbitRadius
cleans code
corrects calculation of orbits
fixes calculation of orbits

velocity of planets needs to get fixed
adds colorChange, corrects radius Calculation, calculates radius of planets and stars over getSize fct
Adds comments to orbit coordinates
Merge branch 'refs/heads/Dev'

Conflicts:
	include/Star.h
	src/Planet.cpp
makes getOrbitRadius public
Sets color for orbits and fixes orbit hittest