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
for ( int i = 0; i < ruleCount; i++ )
		{
			MapRuleDesign rule = new MapRuleDesign( );;
			String testExpr = IOUtil.readString( in );
			String oper = IOUtil.readString( in );
			String value1 = IOUtil.readString( in );
			String value2 = IOUtil.readString( in );
			String displayText = IOUtil.readString( in );
			String displayKey = IOUtil.readString( in );
			rule.setTestExpression( testExpr );
			rule.setExpression( oper, value1, value2 );
			rule.setDisplayText( displayKey, displayText );
			map.addRule( rule );
		}
		return map;
	}
	protected HighlightDesign readHighlight( DataInputStream in )
			throws IOException
	{
		HighlightDesign highlight = new HighlightDesign( );
		int ruleCount = IOUtil.readInt( in );
		for ( int i = 0; i < ruleCount; i++ )
		{
			HighlightRuleDesign rule = new HighlightRuleDesign( );
			String testExpr = IOUtil.readString( in );
			String oper = IOUtil.readString( in );
			String value1 = IOUtil.readString( in );
			String value2 = IOUtil.readString( in );
			IStyle style = readStyle( in );
			rule.setTestExpression( testExpr );