My first assumption was wrong... you didn't have to move that line of code. The reference used document onready, so the script could load below unlike my statement, that did nothing.
The real issue was that you were loading a second version of jquery lower on the page and overwriting the jquery loaded on the top.
The solution is to delete the second, unnecessary, reference from line 1312:
<script src="js/vendor/jquery.js"></script>
Removing that fixes the page.