QmlDesigner: Disable switching to Component elements for the Alpha

Changing anything in the submodel right now crashes, and it seems
it will take some time to fix this.

Reviewed-by: Thomas Hartmann

src/plugins/qmldesigner/components/integration/designdocumentcontroller.cpp

@@ -421,7 +421,8 @@ void DesignDocumentController::loadCurrentModel()
         m_d->stackedWidget->addWidget(m_d->formEditorView->widget());
         ComponentAction *componentAction = new ComponentAction(m_d->formEditorView->widget());
         componentAction->setModel(m_d->model.data());
-        m_d->formEditorView->widget()->lowerToolBox()->addAction(componentAction);
+        // TODO: Enable again
+        //m_d->formEditorView->widget()->lowerToolBox()->addAction(componentAction);
         connect(componentAction, SIGNAL(currentComponentChanged(ModelNode)), SLOT(changeCurrentModelTo(ModelNode))); //TODO component action
         connect(m_d->itemLibrary.data(), SIGNAL(itemActivated(const QString&)), m_d->formEditorView.data(), SLOT(activateItemCreator(const QString&)));
     }