Move the scipts and css tags to app.blade.php
<!-- jQuery -->
<script type="text/javascript" src="https://code.jquery.com/jquery-1.11.3.min.js"></script>
<!-- Isolated Version of Bootstrap, not needed if your site already uses Bootstrap -->
<link rel="stylesheet" href="https://formden.com/static/cdn/bootstrap-iso.css" />
<!-- Bootstrap Date-Picker Plugin -->
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.4.1/js/bootstrap-datepicker.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.4.1/css/bootstrap-datepicker3.css"/>