Use bootstrap from cdn

Author: tdhopper

templates/t_index.html

@@ -33,12 +33,8 @@
     <link rel="icon" type="image/png" sizes="96x96" href="/img/ico/favicon-96x96.png">
     <link rel="icon" type="image/png" sizes="16x16" href="/img/ico/favicon-16x16.png">
     <!-- Bootstrap core CSS -->
-    <link href="css/bootstrap.min.css" rel="stylesheet">
-    <link href="css/bootstrap-grid.min.css" rel="stylesheet">
-    <link href="css/bootstrap-reboot.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
     <link href="https://cdnjs.cloudflare.com/ajax/libs/ekko-lightbox/5.1.1/ekko-lightbox.min.css" rel="stylesheet">
-    <link href="https://cdnjs.cloudflare.com/ajax/libs/bigfoot/2.1.4/bigfoot-default.min.css" rel="stylesheet">
-    <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
 
     <!-- Custom styles for this template -->
     <link href="css/pygments-native.css" rel="stylesheet">
@@ -174,15 +170,11 @@ <h6 class="text-muted">Note:</h6>
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->
-    <script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
-    <script
-        src="https://code.jquery.com/jquery-2.2.4.min.js"
-        integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44="
-        crossorigin="anonymous"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
-    <script src="./js/bootstrap.min.js"></script>
+    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
+
     <script src="https://cdnjs.cloudflare.com/ajax/libs/ekko-lightbox/5.1.1/ekko-lightbox.min.js"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/bigfoot/2.1.4/bigfoot.min.js"></script>
     <script type="text/javascript">
       $(document).on('click', '[data-toggle="lightbox"]', function(event) {
           event.preventDefault();