Fix broken signal
AutoPilot plugin restructuring for better QML support

- properties now hand off of main “autopilot” object in qml
- Added support for summary items through qml
DeleteOnClose causes strange Qt bug

When using DeleteOnClose with a QQuickWidget, the shutdown sequence
causes the MainWindow destructor loop back onto itself.
Disconnect timer on link disconnect

This prevents mavlink signals from being emitted after link is
disconnected
VehicleSummary converted to QML

Summary page is also the launching spot for the setup screens. No more
left hand set of buttons.
Merge pull request #1129 from DonLakeFlyer/QMLVS

Vehicle Summary is now QML