Update survey.js

[FIX] prefill_controller is undefined,  a page request repeat submit
Install survey module,Visit the web site home page.
The browser console log
[survey] Survey Result JS is loading... survey_result.js:21
[survey] Survey Result JS loaded! survey_result.js:176
[survey] Custom JS for survey is loading... survey.js:27
[jquery.form] terminating; zero elements found by selector jquery.form.js:904
[survey] Custom JS for survey loaded! survey.js:157
[survey] Unable to load prefill data survey.js:93