Bug 296565 Make group creation an advanced option in the folder
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardNewGroupMainPage.java
* Creates a group resource handle for the group with the given workspace path.
     * This method does not create the group resource; this is the responsibility
     * of <code>createGroup</code>.
     *
     * @param groupPath the path of the group resource to create a handle for
     * @return the new group resource handle
     */
    protected IFolder createGroupHandle(IPath groupPath) {
    	return IDEWorkbenchPlugin.getPluginWorkspace().getRoot().getFolder(groupPath);
    }
	/**
	 * Creates a new group resource in the selected container and with the
	 * selected name. Creates any missing resource containers along the path;
	 * does nothing if the container resources already exist.
	 * <p>
	 * In normal usage, this method is invoked after the user has pressed Finish
	 * on the wizard; the enablement of the Finish button implies that all
	 * controls on this page currently contain valid values.
	 * </p>
	 * <p>
	 * Note that this page caches the new group once it has been successfully
	 * created; subsequent invocations of this method will answer the same
	 * group resource without attempting to create it again.
	 * </p>
	 * <p>
	 * This method should be called within a workspace modify operation since it
	 * creates resources.
	 * </p>
	 * 
	 * @return the created group resource, or <code>null</code> if the group