Fix Export demo to request permissions

Change-Id: I6de84783d4527131e7332913ccecdc9806cf1804
diff --git a/dev/demo/export.js b/dev/demo/export.js
index 3db7bf4..1eadf8d 100644
--- a/dev/demo/export.js
+++ b/dev/demo/export.js
@@ -32,7 +32,8 @@
       'classes' : [ 'button-icon', 'plugin' ],
       'onClick' : {
         'action' : 'setWidget',
-        'template' : 'http://localhost:7777/export'
+        'template' : 'http://localhost:7777/export',
+        'permissions': ['scripts', 'forms', 'downloads']
       }
     } ]
   });