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
* 
	 * @param s
	 * @return String
	 */
	public static final String htmlEncode( String s )
	{
		String sHtmlEncoded = ""; 
		if ( s == null )
		{
			return null;
		}
		StringBuffer sbHtmlEncoded = new StringBuffer( );
		final char chrarry[] = s.toCharArray( );
		for ( int i = 0; i < chrarry.length; i++ )
		{
			char c = chrarry[i];
			switch ( c )
			{
				case '\t' :
					sbHtmlEncoded.append( "&#09;" ); 
					break;
				case '\n' :
					sbHtmlEncoded.append( "<br>" ); 
					break;
				case '\r' :
					sbHtmlEncoded.append( "&#13;" ); 
					break;
				case ' ' :
					sbHtmlEncoded.append( "&#32;" ); 
					break;