Fixed bug with the number 20 on character create screen
Fixed bug that said the current solar system was out of range. It now returns you to the planet screen.
Persistance is a go. Commence saving games. Also moved the refuel button to the planet controller.
Merge branch 'master' of https://github.com/gem-5/last-adventures into creston/dev

Conflicts:
	src/main/java/edu/gatech/gem5/game/controllers/DisplayUniverseController.java
Changed conditionals that are checked when travelling to your current universe, and fixed bug where confirmation popup was shown even if there was no name (so it didn't create a character even if you said yes)
added quit button and a warning to save if trying to quit before saving
Refueling is now done by character class and will not let money go negative.
Changed the way government types are decided based on tech level. Also fixed bug where you can sell goods for more than you bought them at the same planet. You probably shouldn't use your old save files now.