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 readListField( DataInputStream in, ListItemDesign list,
			short fieldType ) throws IOException
	{
		readListingField( in, list, fieldType );
	}
	protected void readListGroup( DataInputStream in, ListGroupDesign listGroup )
			throws IOException
	{
		while ( in.available( ) > 0 )
		{
			short fieldType = IOUtil.readShort( in );
			readListGroupField( in, listGroup, fieldType );
		}
	}
	protected void readListGroupField( DataInputStream in,
			ListGroupDesign group, short fieldType ) throws IOException
	{
		readGroupField( in, group, fieldType );
	}
	protected void readListBand( DataInputStream in, ListBandDesign listBand )
			throws IOException
	{
		while ( in.available( ) > 0 )
		{
			short fieldType = IOUtil.readShort( in );
			readListBandField( in, listBand, fieldType );
		}
	}
	protected void readListBandField( DataInputStream in,