- select active vehicle
- arm/disarm
- select flight mode

- New MissionManager
- Plumb MissionManager through MissionEditor
- Mission Editor supports get/set

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

- FirmwarePlugin is the new place for code which is specific to
firmware flight stack
- FirmwarePlugin currently supports flight mode apis
- Modify code to use new FirmwarePlugin support

Increase timeout for param apply, make app wait run in a shorter loop to avoid having the OS concluding things do not work.

Airframe QML: Fix order-dependency of config. Highlight selected airframe more clearly. Allow combo box action to select the airframe as well. Allow single click on icon to select airframe.

Can now scroll to work on laptops and tablets. Plus many other changes.