Improved galaxy generation inspector. Still WIP. Also added more prefabs and other things from Ace.
Merge branch 'develop' of https://github.com/RhombusStudios/Lord-of-Rigel-Unity into develop

# By Stamatis
# Via Stamatis
* 'develop' of https://github.com/RhombusStudios/Lord-of-Rigel-Unity:
  Ship faces one of the six sides of hex