Allow breakout links from Kalamar

Change-Id: I0be44caf0b2482681ab68c01172629840a69608f
diff --git a/assets/manifest.json b/assets/manifest.json
index 9470441..712a056 100644
--- a/assets/manifest.json
+++ b/assets/manifest.json
@@ -7,10 +7,10 @@
     "classes" : ["cart"],
     "onClick" : {
       "action" : "addWidget",
-      "template" : "http://localhost:3003/demo/plugin-client.html",
+      "template" : "https://korap.ids-mannheim.de/instance/test/plugin/external/",
       "permissions": [
         "scripts",
-        "downloads"
+        "popups" 
       ]
     }
   }]