Remove unused code

Fix missing param

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

Grouped logging options within General Settings

Move position of HITL to bottom. Handle no SYS_HITL param.

Warn if SYS_HITL is set

Allow Safety page editing while in flight

Switch threshold highlighting support

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

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

Move ArduPilot preflight check handling to generic QGC

The X-UAV Mini Talon is a V-Tail plane. This commit adds the
new group "Plane V-Tail" together with a svg image for the
new group.