Fix dropdown menu doesn't work on some browser

Bootstrap Hover Dropdown Library doesn't work on browser enable 'touchstart' Event.
ex. (Chrome 54 on Windows 10, iPad Safari 10)
Replace behavior in CSS

themes/cakephp/static/css/style.css

@@ -1881,6 +1881,22 @@ header {
     transition: all .0s ease-out;
 }
 
+.dropdown > .dropdown-menu {
+    display: block;
+    visibility: hidden;
+    opacity: 0;
+    -webkit-transition: all 0s ease .5s;
+    transition: all 0s ease .5s;
+}
+
+.dropdown:hover > .dropdown-menu {
+    display: block;
+    visibility: visible;
+    opacity: 1;
+    -webkit-transition: all 0s ease 0s;
+    transition: all 0s ease 0s;
+}
+
 .navbar-nav > li > .dropdown-menu {
     margin-top: 0;
     border-top-left-radius: 2px;

themes/cakephp/static/vendor.js

@@ -1,134 +1,3 @@
-/**
- * @preserve
- * Project: Bootstrap Hover Dropdown
- * Author: Cameron Spear
- * Version: v2.2.1
- * Contributors: Mattia Larentis
- * Dependencies: Bootstrap's Dropdown plugin, jQuery
- * Description: A simple plugin to enable Bootstrap dropdowns to active on hover and provide a nice user experience.
- * License: MIT
- * Homepage: http://cameronspear.com/blog/bootstrap-dropdown-on-hover-plugin/
- */
-;(function ($, window, undefined) {
-    // outside the scope of the jQuery plugin to
-    // keep track of all dropdowns
-    var $allDropdowns = $();
-
-    // if instantlyCloseOthers is true, then it will instantly
-    // shut other nav items when a new one is hovered over
-    $.fn.dropdownHover = function (options) {
-        // don't do anything if touch is supported
-        // (plugin causes some issues on mobile)
-        if('ontouchstart' in document) return this; // don't want to affect chaining
-
-        // the element we really care about
-        // is the dropdown-toggle's parent
-        $allDropdowns = $allDropdowns.add(this.parent());
-
-        return this.each(function () {
-            var $this = $(this),
-                $parent = $this.parent(),
-                defaults = {
-                    delay: 500,
-                    hoverDelay: 0,
-                    instantlyCloseOthers: true
-                },
-                data = {
-                    delay: $(this).data('delay'),
-                    hoverDelay: $(this).data('hover-delay'),
-                    instantlyCloseOthers: $(this).data('close-others')
-                },
-                showEvent   = 'show.bs.dropdown',
-                hideEvent   = 'hide.bs.dropdown',
-                // shownEvent  = 'shown.bs.dropdown',
-                // hiddenEvent = 'hidden.bs.dropdown',
-                settings = $.extend(true, {}, defaults, options, data),
-                timeout, timeoutHover;
-
-            $parent.hover(function (event) {
-                // so a neighbor can't open the dropdown
-                if(!$parent.hasClass('open') && !$this.is(event.target)) {
-                    // stop this event, stop executing any code
-                    // in this callback but continue to propagate
-                    return true;
-                }
-
-                openDropdown(event);
-            }, function () {
-                // clear timer for hover event
-                window.clearTimeout(timeoutHover)
-                timeout = window.setTimeout(function () {
-                    $this.attr('aria-expanded', 'false');
-                    $parent.removeClass('open');
-                    $this.trigger(hideEvent);
-                }, settings.delay);
-            });
-
-            // this helps with button groups!
-            $this.hover(function (event) {
-                // this helps prevent a double event from firing.
-                // see https://github.com/CWSpear/bootstrap-hover-dropdown/issues/55
-                if(!$parent.hasClass('open') && !$parent.is(event.target)) {
-                    // stop this event, stop executing any code
-                    // in this callback but continue to propagate
-                    return true;
-                }
-
-                openDropdown(event);
-            });
-
-            // handle submenus
-            $parent.find('.dropdown-submenu').each(function (){
-                var $this = $(this);
-                var subTimeout;
-                $this.hover(function () {
-                    window.clearTimeout(subTimeout);
-                    $this.children('.dropdown-menu').show();
-                    // always close submenu siblings instantly
-                    $this.siblings().children('.dropdown-menu').hide();
-                }, function () {
-                    var $submenu = $this.children('.dropdown-menu');
-                    subTimeout = window.setTimeout(function () {
-                        $submenu.hide();
-                    }, settings.delay);
-                });
-            });
-
-            function openDropdown(event) {
-                if($this.parents(".navbar").find(".navbar-toggle").is(":visible")) {
-                    // If we're inside a navbar, don't do anything when the
-                    // navbar is collapsed, as it makes the navbar pretty unusable.
-                    return;
-                }
-
-                // clear dropdown timeout here so it doesnt close before it should
-                window.clearTimeout(timeout);
-                // restart hover timer
-                window.clearTimeout(timeoutHover);
-
-                // delay for hover event.  
-                timeoutHover = window.setTimeout(function () {
-                    $allDropdowns.find(':focus').blur();
-
-                    if(settings.instantlyCloseOthers === true)
-                        $allDropdowns.removeClass('open');
-
-                    // clear timer for hover event
-                    window.clearTimeout(timeoutHover);
-                    $this.attr('aria-expanded', 'true');
-                    $parent.addClass('open');
-                    $this.trigger(showEvent);
-                }, settings.hoverDelay);
-            }
-        });
-    };
-
-    $(document).ready(function () {
-        // apply dropdownHover to all elements with the data-hover="dropdown" attribute
-        $('[data-hover="dropdown"]').dropdownHover();
-    });
-})(jQuery, window);
-
 /**
  * Sticky Headers
  */