QmlDesigner: Add hasValidMetaInfo to ModelNode

Change-Id: Ifb00ad28dc72d4876b9dffbad70b18d6ada07004
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
QmlDesigner: Prefix for puppet output

Change-Id: If149ddb26e0e9852b6970ecac6f535499ea7b3af
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>