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
break;
			default :
				readMasterPageField( in, design, fieldType );
		}
	}
	protected void readGraphicMasterPageField( DataInputStream in,
			GraphicMasterPageDesign design, short fieldType )
			throws IOException
	{
		switch ( fieldType )
		{
			case FIELD_COLUMNS :
				int columns = IOUtil.readInt( in );
				design.setColumns( columns );
				break;
			case FIELD_COLUMN_SPACING :
				DimensionType columnSpacing = readDimension( in );
				design.setColumnSpacing( columnSpacing );
				break;
			default :
				readMasterPageField( in, design, fieldType );
		}
	}
	protected void readListingField( DataInputStream in, ListingDesign listing,
			short fieldType ) throws IOException
	{
		switch ( fieldType )
		{
			case FIELD_REPEAT_HEADER :
				boolean repeatHeader = IOUtil.readBool( in );