started implementing layout of universe
Merge branch 'master' into jack/dev
Merge branch 'master' of https://github.com/gem-5/last-adventures into jack/dev

merging master into jack/dev
Adding submission versions of domain model
Universe generation functional. Needs to be cleaned up and Solar Systems need tech levels and special resources.
added attributes to the content model
Cleaned up the Universe and SolarSystem code
"Better toString method for Universe as well as SolarSystem and Planet. Added Planet class as well as Company class, however Company is just a stub.
Merge remote-tracking branch 'origin/master' into james/dev