Fix trad heli mappings

Formatting changes

Fix NuttX build url format

ArduPilot ChibiOS support

Change Command only supported for Simple Items

Prompt for Reboot after compass cal

Respect app units

Use NaN to signal lower level error

Kick off terrain query after load

Don't query intermediate state

Better logging

Add new Help page under Settings

Persist tile info as doubles. This prevent float/double precision match errors at the edge of tiles.

Bump terrain tile version due to format change

Turn internal errors (elevation == -1) into failed query to prevent bogus elevation from reaching upper layers.

Fix failure handling

Use qCWarning for internal errors

Wrap text

Remove WIP

Fix editor sizing

Work around android Qt bug where wrong virtual keyboard is displayed

Fix negative wind direction

Fix initial value calculations

Add flickable

Add file extension if needed

Duplication cleanup

Add Sentera cameras

Fix Reboot and Waiting for Cancel

Better speech for PreArm