Add support for ArduRover MockLink

Add FOLLOW flight mode

Work around quirkiness with ArduPilot and LOITER_* NaN handling on heading.

No camera commands for ArduPilot

Cleanup GeoTag UI

Windows fixes

Converted GeoTagging file dialogs from QtWidgets to QtQuick
Reworked the dialog so it's not all random sizes

Fixed flight widget position.

Get rid of QGCView, QGCViewPanel and FactPanel. All messages and dialogs are now handled in the root window.

BUGFIX: When scanning from the top the starting altitude shall be equal to the structure altitude.

Hack around ArduPilot problems with unsupported NaN in Loiter commands

Wildcard connect to all Hex boards

Grouped logging options within General Settings

Copter 3.7 CH#_OPT -> RC#_OPTION name change