Fix QML warnings

# Conflicts:
#	src/FlightDisplay/GuidedActionsController.qml
#	src/PlanView/PlanView.qml

ArduPilot: Smart RTL and ESC Calibration support

Smart RTL support

Add support for ESC Calibration

Add support for geofence return point. 

Add support for geofence return point. Also fixed a bunch of bugs in geofence and rally point support.

Handle connection to non initialized target

Use a root based global variable (mainWindow.flightDisplayMap) instead of relying on child scoped names (_flightMap)

Upstream stable merge

Better handle the dirty state of Airmap's flightplan

ArduPilot: Cube black service bulletin check

Stable: Fix tagged release builds. PDB artifacts

More work on no serial port ifdef

Relative path to pdb

Fix no serial and android builds

Fix tagged release builds. PDB artifacts

Update

Check for CubeBlack service bulletin

Pattern Preset support

Fix incorrect isManualCamera logic

Fix initialization

Pattern Preset support

the battery and distance of structure scan always show 0