Bug 132914 "Invalid page number" error message is hard coded.
"Invalid page number" error message is hard coded in DocumentProcessor.java. This must be externalized into *.properties file. If there are other hard coded error messages, please also externalize.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/actionhandler/BirtRenderReportActionHandler.java
{
	/**
	 * Output stream to store the report.
	 */
	OutputStream os = null;
	/**
	 * Constructor.
	 * 
	 * @param context
	 * @param operation
	 */
	public BirtRenderReportActionHandler( IContext context,
			Operation operation, GetUpdatedObjectsResponse response,
			OutputStream os )
	{
		super( context, operation, response );
		assert os != null;
		this.os = os;
	}
	/**
	 * Local execution.
	 * 
	 * @exception ReportServiceException