Improve settings hierarchy conciseness

core/templates/partials/settings-hierarchy-nav.html

@@ -0,0 +1,12 @@
+{% if settings_nav %}
+  <h1 class="title is-4">{{ settings_nav.title }}</h1>
+  <div class="tabs is-boxed is-small mb-4 security-page-tabs">
+    <ul>
+      {% for tab in settings_nav.tabs %}
+      <li class="{% if tab.active %}is-active{% endif %}">
+        <a href="{{ tab.href }}">{{ tab.label }}</a>
+      </li>
+      {% endfor %}
+    </ul>
+  </div>
+{% endif %}