Increase delay for sending data to new window

generator/js/ui.js

 
     // Send the generated HTML to the new window
     // Use a delay to give the new window time to set up a message listener
-    setTimeout(function () { tab.postMessage(card_html, '*') }, 100);
+    setTimeout(function () { tab.postMessage(card_html, '*') }, 500);
 }
 
 function ui_load_sample() {