wcs: add a class to formdefs requiring authentication (#9103)

combo/apps/wcs/templates/combo/wcs/forms_of_category.html

@@ -3,7 +3,7 @@
 {{ description|safe }}
 <ul>
 {% for form in forms %}
-<li><a href="{{ form.url }}tryauth">{{ form.title }}</a></li>
+<li {% if form.authentication_required %}class="required-authentication"{% endif %}><a href="{{ form.url }}tryauth">{{ form.title }}</a></li>
 {% endfor %}
 </ul>
 </div>