Drive Plan view ROI support from firmware capability bits

Avoid arrow positioning with take item

Only check latest stable firmware one time

Cleanup download object on error

Fix typo

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

timer.start() and timer.stop() were breaking the 'running' binding of
the timer

Fix current item updating after delete

Not setting _isIncomplete correctly was causing crash

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

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Plan: Make PX4 VTOL takeoff work like fixed wing

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

MSVC warns about not identified pragmas

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Change follow to work above home altitude only

mavlink as submodule contains more warnings than particles in the universe.
This results in a terrible experience for developers, since it makes harder to find
real warning messages for QGC.

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Fix matroskamux stream start (workaround for https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/issues/449)

Fix placement of _sendNextQueuedMavCommand

Added pass/fail/pending text colors to the QGC palette which default to standard text color. Added such that custom builds can override

Expose API to prevent QGC from saving the application window size and position on close (or restoring it on open).

Added properties to enable changing the color of the checklist section headers based on the pass/fail status of the checklist items

Preset selection in wizard mode