Bug 144613 Blank page when set group page break before as always.
Description: Blank page when set group page break before as always. Steps to reproduce: 1. Insert a table. 2. Add a group, set group page break before to always 3. Delete table header and footer 4. Preview in html and pdf Expected result: No blank page Actual result: A blank page in html. If you set group page-break-after to always and preview, no blank page.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFPageLM.java
context.setAllowPageBreak( false );
		regionLM.layout( );
		context.setAllowPageBreak( allowPB );
	}
	/**
	 * layout page footer area
	 * 
	 */
	protected void layoutFooter( )
	{
		IContent footerContent = pageContent.getPageFooter( );
		IReportItemExecutor footerExecutor = new DOMReportItemExecutor(
				footerContent );
		footerExecutor.execute( );
		PDFRegionLM regionLM = new PDFRegionLM( context, page.getFooter( ),
				footerContent, emitter, footerExecutor );
		boolean allowPB = context.allowPageBreak( );
		context.setAllowPageBreak( false );
		regionLM.layout( );
		context.setAllowPageBreak( allowPB );
	}
	public void removeHeader( )
	{
		page.removeHeader( );
	}
	public void removeFooter( )
	{
		page.removeFooter( );
	}
	public void floatingFooter( )