Add back noscript warning about disabled js.

 - Legacy-Id: 19912

Author: larseggert

ietf/templates/base.html

@@ -84,6 +84,12 @@
                     </div>
                 {% endif %}
                 <div class="col overflow-hidden mx-3" id="content">
+                    <noscript>
+                        <div class="alert alert-danger my-3">
+                            <b>Javascript disabled?</b> Like other modern websites, the IETF Datatracker relies on Javascript.
+                            Please enable Javascript for full functionality.
+                        </div>
+                    </noscript>
                     {% for message in messages %}
                         <div class="alert {% if message.level_tag %} alert-{% if message.level_tag == 'error' %}danger{% else %}{{ message.level_tag }}{% endif %} {% endif %} {% if message.extra_tags %} {{ message.extra_tags }}{% endif %} alert-dismissable fade show">
                             <button type="button"