Is there something available in Granite UI like the tableedit2 widget for ExtJS?

With JSP/JSTL there is the tag <fmt:formatDate> to format dates according to the current locale. With Sightly there is currently not such an extension and also custom extensions are not supported (see questions at http://dev.day.com/content/ddc/en/gems/introduction-to-sightly/_jcr_content/par/downlo...