Make microdata XSS-safe and subevent-aware

src/pretix/presale/templates/pretixpresale/base.html

@@ -30,13 +30,6 @@
         <script type="text/javascript" src="{% static "pretixpresale/js/ui/typocheck.js" %}"></script>
         <script type="text/javascript" src="{% static "lightbox/js/lightbox.min.js" %}"></script>
     {% endcompress %}
-    {% if event %}
-        {% autoescape off %}
-        <script type="application/ld+json">
-            {{ event.event_microdata }}
-        </script>
-        {% endautoescape %}
-    {% endif %}
     <meta name="referrer" content="origin">
     {{ html_head|safe }}
     <meta name="viewport" content="width=device-width, initial-scale=1">

src/pretix/presale/templates/pretixpresale/event/index.html

@@ -8,6 +8,12 @@
 {% block title %}{% trans "Presale" %}{% endblock %}
 
 {% block content %}
+
+    {% autoescape off %}
+        <script type="application/ld+json">
+            {{ ev.event_microdata }}
+        </script>
+    {% endautoescape %}
     {% if show_cart %}
         <div class="panel panel-primary cart">
             <div class="panel-heading">