Fix min/max AMSL alt calc

Replace qFuzzyCompare with better functioning QGC::fuzzyCompare

supportedMissionCommands is vehicle class sensitive

Change in vehicle speed requires transect rebuild to recalc terrain max climb/descent rate based setup

Major rework to support terrain profile display and terrain collision reporting

Fix terrain tolerance adjustment step

App messages now use simple modal message dialogs. Vehicle messages continue to use non-modal popup.

Out Survey polygons with KML save

Remove unnecessary includes of QGroundCotrolQmlGlobal.h

Prevent having items with the same sequence number when the item is incomplete

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

Correct handling of terrain ready when loading back from file

Mavlink terrain protocol support

Add support for incomplete segment visuals

Wizard Mode for Create Plan

New Create Plan support

Rework presets

Handle cross fact update internally

Pattern Preset support

Rework complex distance, camera shot count calc for better back compat

Save camera shots and complex distance in plan file so that values are valid when reloading