Much better error reporting for Mission transfer errors

Better error text

Give up on getting AUTOPILOT_VERSION based on time now retry count.

Added correct handling of mavlink 2 change based on capability bits

Fix incorrect passing of firmware type

Mavlink terrain protocol support

Vehicle command send logging

Fix broken ADSB vehicle code

Only check latest stable firmware one time

Fix placement of _sendNextQueuedMavCommand

Remove BatteryFactGroup::cellCount support

Handle unreliable PX4 support of BATTERY_STATUS

Switch to using BATTERY_STATUS for battery info

This was lost when moving the handling the the trajectory points from within the vehicle.

Allow plugin to add flight modes to joystick button actions

Remove qDebug

Fix distance sensor telemetry reading

64 bit fixes

ADSB server support provided through new ADSBVehicleManager implemenation

Treat VHR_HUD.throttle as int16 for reverse throttle

Fix flight timer

Better flight trajectory point algorithm

Plugin'ized follow me support

Enable ArduPilot motor testing

Fix/update offline vehicle capability bits and mavlink version

Configurable Go To Location max distance