Re-add popper.js to fix target label tooltips
<title>{{ pageTitle }}</title>
<link rel="shortcut icon" href="{{ pathPrefix }}/static/img/favicon.ico?v={{ buildVersion }}">
<script src="{{ pathPrefix }}/static/vendor/js/jquery-3.3.1.min.js?v={{ buildVersion }}"></script>
+ <script src="{{ pathPrefix }}/static/vendor/js/popper.min.js?v={{ buildVersion }}"></script>
<script src="{{ pathPrefix }}/static/vendor/bootstrap-4.1.3/js/bootstrap.min.js?v={{ buildVersion }}"></script>
<link type="text/css" rel="stylesheet" href="{{ pathPrefix }}/static/vendor/bootstrap-4.1.3/css/bootstrap.min.css?v={{ buildVersion }}">
