Sketch for the follow me function.
Merge branch 'master' into issue2_followMe

Conflicts:
	DroidPlanner/src/com/droidplanner/DroidPlannerApp.java
Correcting a typo error.
Use the follow me function on the main app. This lines got lost  in the merge

This is a skecth for issue #2.
Add GPS code to the FollowMe class.
Add guided mode packet code.

Working on  issue #2
Only use the GPS location
Send guided packets when receiving a GPS location.
Use the drone default alt in follow me mode.
Merge branch 'master' into issue2_followMe

Conflicts:
	DroidPlanner/src/com/droidplanner/DroidPlannerApp.java
Add a menu to change the default altitude on FlightData screen
Do not forget to disable the follow me mode updates when closing.
Add a preference to enable/disable the follow me functionality.

Defaults to disabled since it needs testing.
Clean-up
Merge branch 'issue2_followMe'

Adds the follow me functionality to 'master'. For precaution there is a preference that needs to be set for the user to be able to use the follow me mode.

Conflicts:
	DroidPlanner/src/com/droidplanner/DroidPlannerApp.java