QmlDesigner.NodeInstances: Refactor isManipulatable to isChangeable

Change-Id: Icfc508e1549f4cfbcdda09b4611b2d66b4e2de1d
Reviewed-on: http://codereview.qt.nokia.com/4287
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@nokia.com>

share/qtcreator/qml/qmlpuppet/instances/objectnodeinstance.cpp

@@ -293,7 +293,7 @@ static bool hasFullImplementedListInterface(const QDeclarativeListReference &lis
 #if QT_VERSION<0x050000
     return list.isValid() && list.canCount() && list.canAt() && list.canAppend() && list.canClear();
 #else
-    return list.isManipulatable();
+    return list.isChangeable();
 #endif
 }