libcoveweb2/templates/libcoveweb2/base.html: Add terms block to template

Author: Ed (ODSC)

libcoveweb2/templates/libcoveweb2/base.html

@@ -120,7 +120,9 @@ <h4>{% trans "About" %}</h4>
             {% endblock %}
           </ul>
           <ul class="text-muted">
+            {% block terms %}
             <li><a href="{% url 'terms' %}">{% trans "Terms &amp; Conditions" %}</a></li>
+            {% endblock %}
           </ul>
           {% comment %}Translators: Provides information about the version of the code base that is being used{% endcomment %}
           {% block version_link %}