added functions to create global waypoinst, modifying the WaypointList class, MapWidget and MainWindows.

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

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

Continue the scaffoldinf for the WP click creation. Now the waypoints are graphically shown in the MapControl. Ready to start interacting with the Waypoint widget

Finished scaffolding the graphical addition of WP via the MapWidget. Added the possibility to display the latitude and longitude of the cursor as a property of QMapControl. Major reorganization of the MapWidget constructor