Feb_19

-fixed bug where sometimes sound won't play after 2 plays, due to
outofmemory and waiting for gc to be called. Fixed this by calling
release() on audiotrack at the start of the loop
-changed the volume multiplier to 0.05f, and changed
GameVariables.volume's max to be 50. This gives around 90(dB) on the
graph for max possible volume.
-removed graph fill, so graph is only dotes now, this looks cleaner
-flipped audiogram upside down because that's how real audigrams are
-created Settings.java, this is for the calibration page