fix datetimepicker style

TODO.md

@@ -1,5 +1,3 @@
-* wth does the datetimepicker not style the current date?
-  * and why is the time not aligned to the time controls?
 * separate dirs for source and downloads
 * fix failing downloads (X-Sendfile?)
 * remove download after download

templates/download.html

@@ -7,7 +7,7 @@
     {% if filename is defined %}
     <meta http-equiv="refresh" content="0;URL='download_file/{{ filename }}'" />
     {% endif %}
-    <link type="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/4.17.47/css/bootstrap-datetimepicker.min.css">
+    <link href="//cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/4.17.47/css/bootstrap-datetimepicker.min.css" rel="stylesheet">
 {% endblock %}
 
 {% block app_content %}