mod_storage_gdbm: Use require directly instead of util.import (which is not available in prosodyctl, breaks adduser etc)
<html>
<head>
<title>Index of {path}</title>
<meta charset="utf-8"/>
<style>{style}</style>
</head>
<body>
<h1>Index of {path}</h1>
<article>
{filelist}
</article>
<footer>{footer}</footer>
</body>
</html>