Fixed email showing up when there is no email but facebook setting

prosopopee/themes/exposure/templates/sections/navmenu.html

@@ -19,7 +19,7 @@
        {% endif %}
        <li><a href="#"><i class="fas fa-envelope-square"></i><Br/>{{ section.contact_text }}</a>
          <ul>
-         {% if section.facebook %}
+         {% if section.email %}
          <li><a href="mailto:{{ section.email }}"><i class="fas fa-envelope-square"></i>Email</a></li>
          {% endif %}
          {% if section.facebook %}