Add all-services link for platform admin user on the choose-services page

app/templates/views/choose-service.html

@@ -10,6 +10,14 @@
   <h1 class="heading-large">
     Choose service
   </h1>
+  {% if current_user.has_permissions(admin_override=True) %}
+    {{ browse_list([
+      {
+          'title': 'List all services',
+          'link': url_for('.show_all_services')
+      }
+      ]) }}
+  {% endif %}
 
   {{ browse_list(services) }}
   {{ browse_list([
@@ -19,4 +27,5 @@
     },
   ]) }}
 
+
 {% endblock %}