use display_visit_number filter

smash/web/templates/visits/details.html

@@ -11,10 +11,10 @@
 {% endblock styles %}
 
 {% block ui_active_tab %}'visits'{% endblock ui_active_tab %}
-{% block page_header %}Details of the visit ({{ visit.visit_number }}) {% endblock page_header %}
+{% block page_header %}Details of the visit ({{ visit.visit_number | display_visit_number }}) {% endblock page_header %}
 {% block page_description %}{% endblock page_description %}
 
-{% block title %}{{ block.super }} - Details of visit ({{ visit.visit_number }}) {% endblock %}
+{% block title %}{{ block.super }} - Details of visit ({{ visit.visit_number | display_visit_number }}) {% endblock %}
 
 {% block breadcrumb %}
     {% include "subjects/breadcrumb.html" %}