This is in preparation for full Qml main window

- properties now hand off of main “autopilot” object in qml
- Added support for summary items through qml

Allows parameter access from QML among other things

This was leftover from a problem I was having with virtual slots

Allows for UI unit tests to be written:
- Ability to respond to expected message boxes
- Ability to fail test if unexpected message boxes occurs

Used for unit testing