Added effects, high scores screen, settings screen. Music plays during the game and is toggled by music, all other sounds are toggled by sound effects. Added a toggle for a future tutorial.

Not sure where/how to handle high score checking/adding + username prompting for high score since the former is done many many times in the game thread where it currently is, while the later has issues being done inside the game thread since it uses an alert dialog.
Merge branch 'master' of https://github.com/Kautiontape/WarpDriveExtreme

Conflicts:
	src/edu/umbc/teamawesome/warpdriveextreme/GameThread.java