VTOL Landing Pattern support

New wizard done model

Drag of land/loiter maintains land distance/heading as appropriate

Out Survey polygons with KML save

Stable update

Fix hamburger positioning

Always how command description. Better support for VTOL Takeoff. New help text for altitude on Land commands.

Vertical index display. Click anywhere in bar.

Visual tweaks for mission items

Plan: Add support for takeoff item required

Mavlink terrain protocol support

Put back ToolStrip titles which were mysteriously removed

Are you sure check on preset delete

Fix altitude mode setting for correct control display

Fix Done Tracing <-> Done PolyFoo in wizard relationship

Drive Plan view ROI support from firmware capability bits

Track trace mode in polygon so we can use it to exit wizard mode

Fix current item updating after delete

Fix Plan insert Takeoff/Land for correct enable state and insert into correct place. 

Plan: Make PX4 VTOL takeoff work like fixed wing

Preset selection in wizard mode

Move label for better fit

Warning text update

Less wordy text

Add localization

Use Map Palette

Persist MissisonItemStatus visibility

MissionItemStatus: Show seq nums, clickable selection

Add support for incomplete segment visuals

Fix command picker visuals

Use consistent "Launch" naming

Remove Fly/Plan from toolstrips

Support move item to previous item position

Make Toolstrip flickable, fix maxHeight, fix bunch of margins

Show MapScale at correct times

Can't hide fly through commands