- Reimplement same behaviour as version 3.1 while resizing the window :
    Stretch the text area to fit the screen
- Change setting text from Alternate Instrument Panel to Vertical Instrument Panel

- Rename QGCInstrumentWidgetAlternate to QGCInstrumentWidget as it's now the default version
- Select  QGCInstrumentWidget as instrumentLoader source

The instrument widget layout is now a stack of :
- QGCAttitudeWidget
- Item that contain ValuesWidget
- QGCCompassWidget

Fixed flight widget position.

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

Prevent clicks going through top level items

Added (UI) support for vehicles exposing more than one camera.

Adding missing qgcView to QGCMapPolygonVisuals instance in SurveyMapVisual.qml

Eliminated flight widget "states"
Define flight widget top margin (plugin options)

Added a signal handler to force toggle the switch. Not sure why the normal signal is not being respected.

Moved "Grid Lines" out of General Options and into the Video Stream Widget
Made a QGC custom Switch element

Clarify the title of the "Video Stream" panel (instead of just "Video")