Bug 154178 Support projectFolder in BIRT viewer
If the report supports projectFolder, the viewer also need to enhance for this feature.
viewer/org.eclipse.birt.report.viewer/src/org/eclipse/birt/report/viewer/utilities/WebViewer.java
.getPluginPreferences( ).getString( MASTER_PAGE_CONTENT );
		boolean bMasterPageContent = true;
		if ( "false".equalsIgnoreCase( masterPageContent ) ) 
		{
			bMasterPageContent = false;
		}
		
		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; 
	}
	/**
	 * Start web application.
	 */
	private static void startWebApp( )
	{
		try
		{
			WebappAccessor.start( "viewer", WebAppPlugin, Path.EMPTY ); 
		}