Instead us a Toolbox concept which hangs off of QGCApplication

Also merged MissionController and MissionEditorController into single
MissionController implementation

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.