Added command to select target position for robot - command can be accessed via a right-click in the 3D View perspective --Lionel

(cherry picked from commit bd8e5bf5)

add widget WaypointView to widget WaypointList when create a waypoint with mouse over the map

Working on QGraphicsView-based local waypoints interface supporting drag-and-drop, commented code, fixed Google Maps interface, added mouse and SpinBox zoom to HSIWidget, fixed MAV-based coloring and stylesheets - MEGA COMMIT

Cleaned up and commented major code parts. Refactoring HDD and HSI widgets to support QGraphicsView drag-and-drop, tested multi-MAV support more intensely, currently adding the system coloring to all widgets