Add includes folder with first includable template

nav_auth_buttons, which will provide log-in and log-out buttons

hshassets/templates/hshassets/includes/nav_auth_buttons.html

+{% load i18n %}
+
+{% if user.is_authenticated %}
+    <span class="nav-item">{% trans "Logged in as" %} {{ user.username }}</span>
+    <span class="nav-item">
+        <a class="button is-white is-outlined" href="{% url 'sso-logout' %}">
+            <span class="icon"><i class="fa fa-sign-out"></i></span>
+            <span>{% trans "Log Out" %}</span>
+        </a>
+    </span>
+{% else %}
+    <span class="nav-item">
+        <a class="button is-white is-outlined" href="{% url 'sso-login' %}">
+            <span class="icon"><i class="fa fa-sign-in"></i></span>
+            <span>{% trans "Log In" %}</span>
+        </a>
+    </span>
+{% endif %}