Adding "Travel" button to Market Screen so players can return to universe
Made travel button on Market screen change to the universe screen, added buttons over each solar system.
Made travel button on Market screen change to the universe screen, added buttons over each solar system.
Merge master into alex/dev

Conflicts:
	src/main/java/edu/gatech/gem5/game/controllers/DisplayUniverseController.java
	src/main/java/edu/gatech/gem5/game/controllers/MarketController.java
	src/main/resources/market.fxml
Fixing errors created by previous merge
Merge master into alex/dev
Made solar systems clickable, displays info screen of first planet on click, added getter/setter methods to SaveFile for solar system info
Merge master into alex/dev

Conflicts:
	src/main/java/edu/gatech/gem5/game/controllers/CharacterCreateController.java