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/birt/WEB-INF/classes/org/eclipse/birt/report/service/BirtViewerReportService.java
String name = engineParam.getName( );
		String displayName = engineParam.getDisplayName( );
		String helpText = engineParam.getHelpText( );
		String promptText = engineParam.getPromptText( );
		ParameterGroupDefinition paramGroup = new ParameterGroupDefinition(
				name, displayName, promptText, null, cascade, helpText );
		List contents = convertParametersInGroup( engineParam.getContents( ),
				paramGroup, task );
		paramGroup.setParameters( contents );
		return paramGroup;
	}
	private static ParameterDefinition convertScalarParameter(
			IScalarParameterDefn engineParam, ParameterGroupDefinition group,
			IGetParameterDefinitionTask task )
	{
		Object handle = engineParam.getHandle( );
		ScalarParameterHandle scalarParamHandle = null;
		if ( handle instanceof ScalarParameterHandle )
			scalarParamHandle = (ScalarParameterHandle) handle;
		String name = engineParam.getName( );
		String pattern = scalarParamHandle == null ? "" : scalarParamHandle 
				.getPattern( );
		String displayFormat = engineParam.getDisplayFormat( );
		String displayName = engineParam.getDisplayName( );
		String helpText = engineParam.getHelpText( );
		String promptText = engineParam.getPromptText( );
		int dataType = engineParam.getDataType( );
		int controlType = engineParam.getControlType( );
		boolean hidden = engineParam.isHidden( );
		boolean allowNull = engineParam.allowNull( );