Bug 156969 [regression]Group header repeat doesn't work in Web Viewer.
Description: Group header repeat doesn't work in Web Viewer. Steps to reproduce: 1. New a data source and dataset, drag the dataset to Layout. 2. Add a group. 3. Set page break in the first data item in table detail row. 4. Preview in web viewer&#12290; Expected result: Group header is repeated in each page. Actual result: No group header repeat effect.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/ir/EngineIRReader.java
}
	protected void readReportItemField( DataInputStream in,
			ReportItemDesign design, short fieldType ) throws IOException
	{
		switch ( fieldType )
		{
			case FIELD_X :
				DimensionType x = readDimension( in );
				design.setX( x );
				break;
			case FIELD_Y :
				DimensionType y = readDimension( in );
				design.setY( y );
				break;
			case FIELD_HEIGHT :
				DimensionType height = readDimension( in );
				design.setHeight( height );
				break;
			case FIELD_WIDTH :
				DimensionType width = readDimension( in );
				design.setWidth( width );
				break;
			case FIELD_BOOKMARK :
				String bookmark = IOUtil.readString( in );
				design.setBookmark( bookmark );
				break;
			case FIELD_TOC :
				String toc = IOUtil.readString( in );
				design.setTOC( toc );
				break;