Preferences: refactor + add refresh rate & debug + sned more settings to pebble
Change refresh interval
Save GPS stats every minute

prevent loosing GPS stats if app crashes
Merge branch 'dev_map' into mock_location

Conflicts:
	src/com/njackson/GPSService.java
Use time provided by gps instead of system time

addAltitude() also accepts a distance parameter for future compatibility

Conflicts:
	src/com/njackson/util/AltitudeGraphReduce.java
Altitude: pondered average
Elapsed time: fix size (2 lines on small screens) and android 2.2 compatibility
Units
OruxMaps integration
Merge branch 'dev_map' into mock_location