Bug 155766 [Regression]Preview will not refresh the modify in design report
Details: Preview will not refresh the modify in design report Step: 1.New a report design. 2.New a label and input label1. 3.Preview. 4.Switch to Layout and modify the content of label as label2. 5.Preview. Actual result: It preview as "label1" twice. Exception result: Preview "label2" at the second time
viewer/org.eclipse.birt.report.viewer/src/org/eclipse/birt/report/viewer/utilities/WebViewer.java
encodedResourceFolder = ""; 
		
		return getBaseURL( )
				+ servletName
				+ "?" 
				+ "__report=" + encodedReportName 
				+ "&__format=" + format 
				+ "&__svg=" + String.valueOf( bSVGFlag ) 
				+ ( LocaleTable.containsKey( locale )
						? "&__locale=" + LocaleTable.get( locale ) : "" ) 
				+ "&__designer=" 
				+ String.valueOf( inDesigner )
				+ "&__masterpage=" + String.valueOf( bMasterPageContent ) 
				+ "&__rtl=" + String.valueOf( rtl ) 
				+ "&__maxrows=" + maxrows 
				+ "&__resourceFolder=" + encodedResourceFolder; 
	}
	/**
	 * Start web application.
	 */
	private static void startWebApp( )
	{
		try
		{
			WebappAccessor.start( "viewer", WebAppPlugin, Path.EMPTY ); 
		}
		catch ( CoreException e )
		{
			
		}