fix HTML template for BG-21
The HTML template is using attribute id for "uebersichtZuschlaege" when it should be class. Needs to be fixed so multiple BG-21 won't cause "duplicate ID" error.
The HTML template is using attribute id for "uebersichtZuschlaege" when it should be class. Needs to be fixed so multiple BG-21 won't cause "duplicate ID" error.