maiskiykot,
порядок загрузки скриптов
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery.isotope/2.2.2/isotope.pkgd.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/bootstrap-slider/9.2.0/bootstrap-slider.js'></script>
<script>
// External js: jquery, isotope.pkgd.js, bootstrap.min.js, bootstrap-slider.js
$( function() {
версии эти или новее, bootstrap возможно вам не нужен.