Too flaky with problems that are likely unit test only problems

This reverts commit 86f29adf.

This is in preparation for full Qml main window

- Delete all old map code

- fix bugs found by test
- Implemented Mock mission item protocol in

Use import QGroundControl 1.0 to get to it

- Also added new adjustMavlinkMessage support

Too complicated supporting both modes as editor becomes more complex

These use OpenGL implementation which prevented moving to ANGLE
support. Since they are rarely used they are being remove instead of
being upgrade.

These use OpenGL implementation which prevented moving to ANGLE
support. Since they are rarely used they are being remove instead of
being upgrade.

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

Plus lots of other cleanup

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