Bug 296565 Make group creation an advanced option in the folder
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardNewFolderMainPage.java
private static final int SIZING_CONTAINER_GROUP_HEIGHT = 250;
	private IStructuredSelection currentSelection;
	private IFolder newFolder;
	
	private URI linkTargetPath;
	
	private ResourceAndContainerGroup resourceGroup;
	private Button advancedButton;
	private Button filterButton;
	
	private CreateLinkedResourceGroup linkedResourceGroup;
	private Composite linkedResourceParent;
	private Composite linkedResourceComposite;
	private UIResourceFilterDescription[] filterList = null;
	
	/**
	 * Height of the "advanced" linked resource group. Set when the advanced
	 * group is first made visible.
	 */
	private int linkedResourceGroupHeight = -1;
	/**
	 * First time the advanced group is validated.
	 */
	private boolean firstLinkCheck = true;
	/**
	 * Creates a new folder creation wizard page. If the initial resource