… lang code * forgot to include query string in redirected url * force prepend lang code shall get per get_lang()
* avoid duplicate decoding
… one, turn "/" to "/de"
…ecode bytestring with charset specified in po file
…ge code had beed specified in url. for example, user A request `/de`, and user B request `/`, A shall now see the page in german, B shall read the page in default language, without this patch, B sees page in german, too
…anslate a whole function)