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The custom notification code leads to hard readable code.

Reviewed-by: hjk

This notifies the views if the instance has be really instanced.

Reviewed-By: Thomas Hartmann

Bauhaus now uses only one single instance view.

Done by Marco Bubke

This is needed to suppert inline script function of Qml in the designer

This is fixing a crash

Task-Number: BAUHAUS-622
Reviewed-by: Marco Bubke

The usage of 'int newIndex' was ambiguous in the case of
oldIndex < newIndex. Solved by directly passing the ModelNode that was
moved around.

'nodeSlidedToIndex' was also renamed to 'nodeOrderChanged', since
'Slided' is no proper English.

This adds a new "Design" mode that can be used to manipulate qml files
in a visual way. It will only get build if you have the declarativeui
module in Qt.

This is a squashed import from the Bauhaus project. Share & enjoy :)