ui: fix context dump

packages/ui-default/templates/layout/html5.html

@@ -42,6 +42,10 @@
 <body>
   {% block body %}{% endblock %}
   {% if not isIE(handler.request.headers['user-agent']) %}
+  <script>
+    UiContext = '{{ UiContext|json|jsesc|safe }}';
+    UserContext = '{{ UserContext|json|jsesc|safe }}';
+  </script>
   <script type="text/javascript" src="{{ ('/locale/{0}.js'.format(handler.translate('__id'))) }}"></script>
   <script type="text/javascript" src="/ui-constants.js"></script>
   <script type="text/javascript" src="{{ static_url('hydro.js') }}"></script>