Fix textRole usage for QGCComboBox

Make scrollable, fix broken combobox

With the switch to QtQuick, all file dialogs from the c++ side no longer work. This was marked as TODO and fell through the cracks.

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Restored FirmwareUpgrade.qml as it was beyond repair. Also fixed some issues that were present in the original, master version.
Added "hasAPMSupport" to QGroundControl global control. This is to determine if APM support is enabled or not.

Don't hideDialog when it doesn't flash

Switch to using firmware manifest for ArduPilot flashing

Fixed flight widget position.

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

ArduPilot: Support flash bootloader

The idea here is to prevent people from accidentally flashing the wrong firmware

Custom, single firmware upgrades were fixed to "stable", even if the user selected "custom".
The code, when selecting the firmware type was using the combo box model index instead of the actual type defined by the list model.

Adding missing qgcView to QGCMapPolygonVisuals instance in SurveyMapVisual.qml

Remove zip experiment.

This will make setup pages respond accordingly to armed state
transitions. This will also allow the settings on a page to at least be
visible while they are disabled.

Instead of hardcoded "QGroundContorl" strings

* Add support for another board

* Added a 2nd custom board