Explicitly leave appointment if navigating via header link (#164)

Author: edwardhorsford

app/views/_templates/layout-app.html

@@ -17,9 +17,13 @@
 {% block header %}
 
   {% set useMinimalNav = useMinimalNav | default(false) %}
+  {% set rootHref = "/" %}
 
   {% if event and event | isAppointmentWorkflow %}
     {% set useMinimalNav = true %}
+
+    {# Explicitly leave appointment if navigating away #}
+    {% set rootHref = eventUrl ~ "/leave" | urlWithReferrer("/") %}
   {% endif %}
 
   {{ header({
@@ -38,7 +42,7 @@
     },
     service: {
       text: serviceName,
-      href: "/"
+      href: rootHref
     },
     navigation: {
       items: