Fixed flight widget position.

Adding missing qgcView to QGCMapPolygonVisuals instance in SurveyMapVisual.qml

Handled "airspace visible" state (not done)
Adjusted restriction map items color and opacity
Added/Updated icons for airspace traffic
Adjust colors for text over maps

Also rename QmlPageInfo to QmlComponentInfo to cover more use cases

Used to display items associated with Flight Plan on Map

Fixed found bugs

Plus low battery announce changes