navigator: skip takeoff if already above takeoff altitude
mission: takeoff and next waypoint related fixes
navigator/mission.cpp: indentation fixed
Merge branch 'master' into takeoff_fix
navigator: autocontinue fix
Merge remote-tracking branch 'upstream/master' into takeoff_fix

Conflicts:
	src/modules/navigator/mission.cpp
Fixed function name of mission modification logic, attributed @DrTon
Merge pull request #1279 from PX4/takeoff_fix

navigator: skip takeoff if already above takeoff altitude