dj

redirects to undefined (temporary fix: [replace](https://github.com/rejetto/hfs2/blob/master/default.tpl#L913) undefined with '')

showNotification('message') only shows ??? can we add text (title or body)

how about notifications about dwd? http://www.dwd.de/DE/wetter/warnungen_aktuell/objekt_einbindung/objekteinbindung.html (jsonp) https://github.com/dj0001/DWD