Add support for ESC Calibration

More work on no serial port ifdef

Fix no serial and android builds

Check for CubeBlack service bulletin

Fixed flight widget position.

Get rid of QGCView, QGCViewPanel and FactPanel. All messages and dialogs are now handled in the root window.

Fix incorrect text

Copter 3.7 CH#_OPT -> RC#_OPTION name change

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

Allow Safety page editing while in flight

Support COMPASS_AUTO_ROT==2 for orientations set automatically.

This reverts commit c69a49e6.

Move ArduPilot preflight check handling to generic QGC

Fix Reboot and Waiting for Cancel