data change should only be recognized when input is in a form

smash/web/static/js/smash.js

@@ -12,7 +12,9 @@ $(document).ready(function () {
     var formDataChanged = false;
 
     $(":input", this).change(function () {
-        formDataChanged = true;
+        if (this.form !== undefined && this.form !== null) {
+            formDataChanged = true;
+        }
     });
 
     $('.main-sidebar a').click(function () {