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
return null;
		String key = "viewer.label." + format.replaceAll( " ", "_" ); 
		String label = DataUtil.trimString( getInitProp( key ) );
		if ( label.length( ) <= 0 )
			label = format;
		return label;
	}
	/**
	 * Returns the base url defined in config file
	 * 
	 * @return
	 */
	public static String getBaseURL( )
	{
		String baseURL = getInitProp( PROP_BASE_URL );
		if ( baseURL != null && baseURL.length( ) > 0 )
		{
			if ( baseURL.endsWith( "/" ) ) 
				baseURL = baseURL.substring( 0, baseURL.length( ) - 1 );
		}
		return baseURL;
	}
	/**
	 * convert path from System Properties Definition. For example:
	 * ${java.io.tmpdir}
	 * 
	 * @param path
	 * @return
	 */
	protected static String convertSystemPath( String path )