#15: Distance and speed rings can be switched on and drawn independently from one another.
Make distance ring text half-size and green
Draw runway numbers later in drawMap so they're on top
Merge branch 'master' into dpiIndependenceWork
Merge branch 'distanceRingText' into dpiIndependenceWork

Conflicts:
	src/com/ds/avare/LocationView.java
Added new resources for different sized screens
Modified text and line drawing to use values appropriate to the screen size