Bug 200812 Issue when remove one separator setting in viewer.property[0002]
Description: Issue when remove one separator setting in viewer.property Build number:2.2.1.v200708220927 Steps to reproduce: 1. Deploy birt. 2. Open viewer.properties under WEB-INF folder. 3. Delete "viewer.sep.0=," line 4. Start server. 5. Preview report. 6. Export Data, select columns and select "Comma(,)", click OK. Expected result: Comma(,) isn't in the separator list. Actual result: Nothing happened after step6 and no error logs. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
}
	/**
	 * This function is used to decode a htmlEncoded string and convert to the
	 * orginial string
	 * 
	 * @param s
	 * @return String
	 */
	public static final String htmlDecode( String s )
	{
		if ( s == null )
			return null;
		String sHtmlDecoded = s.replaceAll( "&#09;", "\t" ); 
		sHtmlDecoded = sHtmlDecoded.replaceAll( "<br>", "\n" ); 
		sHtmlDecoded = sHtmlDecoded.replaceAll( "&#13;", "\r" ); 
		sHtmlDecoded = sHtmlDecoded.replaceAll( "&#32;", " " );
		sHtmlDecoded = sHtmlDecoded.replaceAll( "&#34;", "\"" );
		sHtmlDecoded = sHtmlDecoded.replaceAll( "&#39;", "'" );
		sHtmlDecoded = sHtmlDecoded.replaceAll( "&#60;", "<" );
		sHtmlDecoded = sHtmlDecoded.replaceAll( "&#62;", ">" );
		sHtmlDecoded = sHtmlDecoded.replaceAll( "&#96;", "`" );
		sHtmlDecoded = sHtmlDecoded.replaceAll( "&#38;", "&" );
		sHtmlDecoded = sHtmlDecoded.replaceAll( "&#92;", "\\\\" );
		sHtmlDecoded = sHtmlDecoded.replaceAll( "&#47;", "/" );
		return sHtmlDecoded;
	}
	/**
	 * Initial the parameters class. Web.xml is in UTF-8 format. No need to do
	 * encoding convertion.
	 *