New LandingComplexItem base class for landing patterns

Major rework to support terrain profile display and terrain collision reporting

Support for reusable InstrumentValueArea control

Set RC To Param support

Initial support for value ranges

Generic icon set for values display

VTOL Landing Pattern support

Out Survey polygons with KML save

Remove unused HIL code

Much better mission->kml conversion support

Survey And Corridor now share same transect generation code. Better unit tests for both with more coverage.

Mavlink terrain protocol support

Makes more sense for it to be in VideoStreamer as it takes care of managing
the video streams.

This adds support for the new ArduSub 3.0 feature of automatically detecting
the thrusters directions and reverting the corresponding motor output if
necessary

Move analyze page list model to the core plugin.

ADSB server support provided through new ADSBVehicleManager implemenation

Support for new TakeoffMissionItem and Takeoff Tool 

Integrate Create Plan overlay in File DropPanel

New Create Plan support

ArduPIlot Follow Me setup

Better flight trajectory point algorithm

Disable pairing

Disable Pairing code on Android 64 bit builds

New qml base log replay status bar