Fix line numbers for text

templates/display/bin.html

@@ -2,7 +2,9 @@
 
 {% block head %}
     <link href="{{ sitepath }}static/css/highlight/tomorrow.css" rel="stylesheet" type="text/css">
+{% if extra.lang_hl != "text" %}
     <link href="{{ sitepath }}static/css/highlight/lines.css" rel="stylesheet" type="text/css">
+{% endif %}
 {% endblock %}
 
 {% block innercontentmore %} class="scrollable"{% endblock %}