I dont think the missing buttons was a css issue. See my solution over there.
Either way here are all the css and js imports on the screen:
<link href="/css/jquery-ui.min.css" rel="stylesheet" />
<link href="https://cdnjs.cloudflare.com/ajax/libs/chosen/1.8.7/chosen.min.css" rel="stylesheet" />
<link href="/css/Style.css" rel="stylesheet" />
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.1/css/all.css" integrity="sha384-fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr" crossorigin="anonymous">
<link href="//rawgithub.com/indrimuska/jquery-editable-select/master/dist/jquery-editable-select.min.css" rel="stylesheet">
<script src="/js/jquery_2.2.4.min.js"></script>
<script src="/js/jquery-ui.js"></script>
<script src="/js/jquery.are-you-sure.js"></script>
<script src="/js/jquery.validate.js"></script>
<script src="/js/jquery.validate.unobtrusive.js"></script>
<script src="/js/jquery.unobtrusive-ajax.js"></script>
<script src="/js/chosen.jquery.js"></script>
<script src="/js/moment.js"></script>
<script src="/js/lodash.min.js"></script>
<script src="/js/jquery.ui.autocomplete.html.js"></script>
<script src="/js/chosen.order.jquery.js"></script>
<script src="/js/shared.js"></script>
<script src="/js/nav-controls.js"></script>
<script src="/js/CustomValidators.js"></script>
<!--ParamQuery Grid css files-->
<link rel="stylesheet" href="/libraries/paramquery-6.1.0/pqgrid.min.css" />
<!--add pqgrid.ui.css for jQueryUI theme support-->
<link rel="stylesheet" href="/libraries/paramquery-6.1.0/pqgrid.ui.min.css" />
<!--ParamQuery Grid custom theme e.g., office, bootstrap, rosy, chocolate, etc (optional)-->
<link rel="stylesheet" href="/libraries/paramquery-6.1.0/themes/gray/pqgrid.css" />
<!--ParamQuery Grid js files-->
<script type="text/javascript" src="/libraries/paramquery-6.1.0/pqgrid.min.js"></script>
<!--ParamQuery Grid localization file (necessary since v5.2.0)-->
<script src="/libraries/paramquery-6.1.0/localize/pq-localize-en.js"></script>
<!--Include pqTouch file to provide support for touch devices (optional)-->
<script type="text/javascript" src="/libraries/paramquery-6.1.0/pqTouch/pqtouch.min.js"></script>
<!--Include jsZip file to support xlsx and zip export (optional)-->
<script type="text/javascript" src="/libraries/paramquery-6.1.0/jsZip-2.5.0/jszip.min.js"></script>
<!--Include jquery.resize to support auto height of detail views in hierarchy (optional)-->
<script type="text/javascript" src="/libraries/paramquery-6.1.0/javascript-detect-element-resize/jquery.resize.js"></script>
<script src="https://cdn.jsdelivr.net/npm/file-saver@2.0.2/dist/FileSaver.min.js"></script>