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