Remove deprecated libraries (and references): MDL, jQueryUI, Spin.js,…

NOTICE

@@ -52,30 +52,22 @@ files and utilities for further information:
  BSD 3-Clause License
  http://adodb.org
 
+ Bootstrap (app/webroot/js/bootstrap)
+ MIT License
+ https://getbootstrap.com/
+
  Guzzle (app/AvailablePlugin/GithubProvisioner/Vendor/guzzle) 
  MIT License
  https://github.com/guzzle/guzzle
 
  jQuery (app/webroot/js/jquery)
  MIT License
  http://jquery.com
-
- jQuery UI (app/webroot/js/jquery/jquery-ui-*)
- MIT License
- http://jquery.com
 
  jsTimezoneDetect (app/webroot/js/jstimezonedetect)
  MIT License
  https://bitbucket.org/pellepim/jstimezonedetect
 
- Magnific Popup (app/webroot/js/jquery/magnificpopup)
- MIT License
- http://dimsemenov.com/plugins/magnific-popup
-
- Material Design Light (app/webroot/js/mdl)
- Apache 2.0
- https://getmdl.io
-
  noty (app/webroot/js/jquery/noty)
  MIT License
  http://ned.im/noty
@@ -87,13 +79,5 @@ files and utilities for further information:
  Shibboleth Embedded Discovery Service (app/webroot/js/eds)
  Apache 2.0
  https://shibboleth.net/products/embedded-discovery-service.html
-
- spin.js (app/webroot/js/jquery/spin*)
- MIT License
- http://spin.js.org
-
- Superfish (app/webroot/js/superfish)
- MIT License
- https://superfish.joelbirch.co
 
 ---------------------------------------------------------------------------

app/templates/layout/default.php

@@ -56,10 +56,6 @@
 
     <!-- Load CSS -->
     <?= $this->Html->css([
-      // XXX Keep these deprecated libraries commented here for the time being
-      //'jquery/jquery-ui-1.12.1.custom/jquery-ui.min',
-      //'mdl/mdl-1.3.0/material.min.css',
-      //'jquery/metisMenu/metisMenu.min.css',
       'fonts/Font-Awesome-4.6.3/css/font-awesome.min',
       'bootstrap/bootstrap.min',
       'co-color',
@@ -69,8 +65,7 @@
 
     <!-- Load JavaScript (only JQuery here - other scripts at bottom) -->
     <?= $this->Html->script([
-      'jquery/jquery.min.js',
-      'jquery/jquery-ui-1.12.1.custom/jquery-ui.min.js'
+      'jquery/jquery.min.js'
     ]) . "\n"; ?>
 
     <!-- Include external files and scripts -->
@@ -196,7 +191,6 @@
     <!-- XXX Noty, js-cookie, and metisMenu should be deprecated -->
     <?= $this->Html->script([
       'bootstrap/bootstrap.bundle.min.js',
-      'jquery/metisMenu/metisMenu.min.js',
       'js-cookie/js.cookie-2.1.3.min.js',
       'jquery/noty/jquery.noty.js',
       'jquery/noty/layouts/topCenter.js',