Disable closing app on last window close. This will close
the app on every widget spawned in QML that closes (MessageBox)

Advanced tuning hidden due to crash from Qt problem

Remove unused code

Fix missing param

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

all calls to qsTr are done, if I didn't forget anything,
on the PX4 QML files.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>