Some comment cleanup, and fix so when closing the main window, it also closes the item select window

Removed OpenGL dependency in HUD, merged in HUD from Soren Kuula and config changes from Michael Carpenter

Impl. Lorenz suggestions wrt one velocityChanged, altitudeChanged, speedChanged signal per reference frame. Impl. CDI on compass disk.

Changes go UASQuickView handles resizing better, and doesn't "clip" text when the window is too small.

Hotfix: Fixed widget / UAS initialization order which led to text messages (and other updates) being ignored if the widget was not open when the UAS was created

Fix for crash when removing item from QuickView, and addition of more generic signal/slot combonation for property updates

Added satelliteCount to the QuickView, and made quickview a default display on the mission planner view.

Changes for the new "View" navigation, and fixes to get most of the dockwidgets working with the new view system

Removed a lot of verbose debug output, added connection indication to main menu bar to improve situational awareness of operator