Bug 151361 default value for reousrce folder user preference
When user does not sepecify the resourec foler user preference, can we make the current project folder (in IDE) or the current report design file's folder (in RCP) as the default value for the resource folder. This way, by default the current project folder is the resource folder where user can create their libs and images. Also please set the default user preference to be null when BIRT is freshly installed.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
*/
	public static boolean createGroup( DesignElementHandle parent )
	{
		Assert.isNotNull( parent );
		try
		{
			return addGroup( parent, -1 );
		}
		catch ( SemanticException e )
		{
			ExceptionHandler.handle( e );
			return false;
		}
	}
	/**
	 * Creates a new group in the position under the given parent
	 * 
	 * @param parent
	 *            The parent of the new group, it should be a table or a list
	 *            and should not be null.
	 * @param position
	 *            insert position
	 * @return true if the group created successfully, false if the creation is
	 *         cancelled or some error occurred.
	 */
	public static boolean createGroup( DesignElementHandle parent, int position )
	{
		Assert.isNotNull( parent );
		try
		{