Move cache location methods so they are available in all builds

Add missing header

Add --clear-cache option

Fix Rover check for isFlying

Hack to allow Rover setup pages to work

Assume non autopilot components follow current mavlink param_value spec

Fix cases of _logVehiclePrefix usage with missing componentId

Add support for Orbit flight mode

Show Orbit center from telemetry

The Url in custom command widget has been moved to
https://docs.qgroundcontrol.com/en/app_menu/custom_command_widget.html

Fix AutoLoad not sending GeoFence or Rally Points to vehicle

Fix Rally Point loading

Fix handling of dirty bit when home position changes from vehicle side

Fix rotation

Fix bit check

Fix category change signalling.

Three components for better testing

Fix support for single vehicle coming and going

Show orbit telemetry status on map

Remove incorrect zorder

Larger arrow size

* Add support for showing rotation on QGCMapCircle.
* Support rotation change for Orbit

Fix connections to offline vehicle