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 FormEditor getActiveReportEditor( )
	{
		return getActiveReportEditor( true );
	}
	/**
	 * Returns the current active report editor in current active page or
	 * current active workbench.
	 * 
	 * @param activePageOnly
	 *            If this is true, only search the current active page, or will
	 *            search all pages in current workbench, returns the first
	 *            active report or null if not found.
	 * @return the current active report editor, or null if no report editor is
	 *         active.
	 */
	public static FormEditor getActiveReportEditor( boolean activePageOnly )
	{
		IWorkbenchWindow window = PlatformUI.getWorkbench( )
				.getActiveWorkbenchWindow( );
		if ( window != null )
		{
			if ( activePageOnly )
			{
				IWorkbenchPage pg = window.getActivePage( );
				if ( pg != null )
				{
					IEditorPart editor = pg.getActiveEditor( );
					if ( editor != null )
					{
						if ( editor instanceof IReportEditor )