Support for Vehicle and Firmware classes

Rework handling of fw/vehicle type with respect to conflicts with actual vehicle types.

Major rework to support terrain profile display and terrain collision reporting

Update unit test for no auto takeoff item add

Remove unnecessary signaling

Fix unit test for new planned home position behavior

Update unit tests to catch this

Fixed found bugs

Plus new unit tests

Also additional major Mission usability changes

Also turn on MavlinkLogTest