Propagate opacity and interactive properties to mission items
Set opacity to 0.5 for items that are not part of the current
edit view

Fix Done Tracing <-> Done PolyFoo in wizard relationship

PolyLine -> Polyline

Polygon/Line tool name changes

New centered PlanEditToolbar

New Create Plan support

Button name changes

Corridor edit toolbar

Use new SplitIndicator control

Make visibility work

Update all files that use a QML Menu item to QtQuick.Controls 2.4 to solve the issue of a menu showing up in random places on Android.

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