adding turnaround waypoints
adding turnaround waypoints

Conflicts:
	src/MissionEditor/SurveyItemEditor.qml
	src/MissionManager/ComplexMissionItem.cc
	src/MissionManager/ComplexMissionItem.h

CornerOfSkyline/qgroundcontrol,CornerOfSkyline/qgroundcontrol,ethz-asl/qgc_asl,Hunter522/qgroundcontrol,kd0aij/qgroundcontrol,CornerOfSkyline/qgroundcontrol,ethz-asl/qgc_asl,Hunter522/qgroundcontrol,kd0aij/qgroundcontrol,kd0aij/qgroundcontrol,ethz-asl/qgc_asl,RedoXyde/PX4_qGCS,CornerOfSkyline/qgroundcontrol,kd0aij/qgroundcontrol,RedoXyde/PX4_qGCS,kd0aij/qgroundcontrol,Hunter522/qgroundcontrol,RedoXyde/PX4_qGCS,Hunter522/qgroundcontrol,CornerOfSkyline/qgroundcontrol,kd0aij/qgroundcontrol,RedoXyde/PX4_qGCS,ethz-asl/qgc_asl,RedoXyde/PX4_qGCS,RedoXyde/PX4_qGCS,ethz-asl/qgc_asl,Hunter522/qgroundcontrol,CornerOfSkyline/qgroundcontrol,Hunter522/qgroundcontrol