When on Joystick config page:
- Not calibrating: If joystick is enabled, joystick messages should
continue to go to vehicle

Accidentally deleted somehow

Plus lots of other cleanup

- Moved all MavManager functionality to Vehicle
- Updated all code to use Vehicle instead of MavManager
- Removed MavManager

Signed-off-by: kai <kai@uav-flightresearch.com>

- MultiVehicleManager is a Qml friendly replacement for UASManager
- Vehicle is a replacement for both UAS and AutoPilotPlugin