- Pervasive change to automatically connect to known board types
- Lots of additional changes along with this:
- More exposure of objects/properties to Qml
- Much restructuring in LinkManager and LinkManager clients

Disable COM_RC_IN_MODE magic handling, as its causing confusion on all autopilot stacks. This is a developer thing which is actually much easier to not expose, even for the involved developers.

Instead us a Toolbox concept which hangs off of QGCApplication

- Delete all old map code

- Fixed bugs found to unit test

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

Previous code was horribly wrong.

- Also added new adjustMavlinkMessage support

Also much other cleanup/change

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

- Restructured a number of MissionItem properties as well