diff --git a/src/wp-includes/js/tinymce/plugins/link/plugin.js b/src/wp-includes/js/tinymce/plugins/link/plugin.js
new file mode 100644
index 0000000000..d4aa001d1e
--- /dev/null
+++ b/src/wp-includes/js/tinymce/plugins/link/plugin.js
@@ -0,0 +1,1162 @@
+(function () {
+
+var defs = {}; // id -> {dependencies, definition, instance (possibly undefined)}
+
+// Used when there is no 'main' module.
+// The name is probably (hopefully) unique so minification removes for releases.
+var register_3795 = function (id) {
+  var module = dem(id);
+  var fragments = id.split('.');
+  var target = Function('return this;')();
+  for (var i = 0; i < fragments.length - 1; ++i) {
+    if (target[fragments[i]] === undefined)
+      target[fragments[i]] = {};
+    target = target[fragments[i]];
+  }
+  target[fragments[fragments.length - 1]] = module;
+};
+
+var instantiate = function (id) {
+  var actual = defs[id];
+  var dependencies = actual.deps;
+  var definition = actual.defn;
+  var len = dependencies.length;
+  var instances = new Array(len);
+  for (var i = 0; i < len; ++i)
+    instances[i] = dem(dependencies[i]);
+  var defResult = definition.apply(null, instances);
+  if (defResult === undefined)
+     throw 'module [' + id + '] returned undefined';
+  actual.instance = defResult;
+};
+
+var def = function (id, dependencies, definition) {
+  if (typeof id !== 'string')
+    throw 'module id must be a string';
+  else if (dependencies === undefined)
+    throw 'no dependencies for ' + id;
+  else if (definition === undefined)
+    throw 'no definition function for ' + id;
+  defs[id] = {
+    deps: dependencies,
+    defn: definition,
+    instance: undefined
+  };
+};
+
+var dem = function (id) {
+  var actual = defs[id];
+  if (actual === undefined)
+    throw 'module [' + id + '] was undefined';
+  else if (actual.instance === undefined)
+    instantiate(id);
+  return actual.instance;
+};
+
+var req = function (ids, callback) {
+  var len = ids.length;
+  var instances = new Array(len);
+  for (var i = 0; i < len; ++i)
+    instances.push(dem(ids[i]));
+  callback.apply(null, callback);
+};
+
+var ephox = {};
+
+ephox.bolt = {
+  module: {
+    api: {
+      define: def,
+      require: req,
+      demand: dem
+    }
+  }
+};
+
+var define = def;
+var require = req;
+var demand = dem;
+// this helps with minificiation when using a lot of global references
+var defineGlobal = function (id, ref) {
+  define(id, [], function () { return ref; });
+};
+/*jsc
+["tinymce.plugins.link.Plugin","tinymce.core.PluginManager","tinymce.plugins.link.core.Actions","tinymce.plugins.link.ui.Controls","global!tinymce.util.Tools.resolve","tinymce.core.util.VK","tinymce.plugins.link.ui.Dialog","tinymce.plugins.link.core.OpenUrl","tinymce.plugins.link.core.Utils","tinymce.plugins.link.core.Settings","tinymce.core.util.Delay","tinymce.core.util.Tools","tinymce.core.util.XHR","global!RegExp","tinymce.core.dom.DOMUtils","tinymce.core.Env"]
+jsc*/
+defineGlobal("global!tinymce.util.Tools.resolve", tinymce.util.Tools.resolve);
+/**
+ * ResolveGlobal.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.core.PluginManager',
+  [
+    'global!tinymce.util.Tools.resolve'
+  ],
+  function (resolve) {
+    return resolve('tinymce.PluginManager');
+  }
+);
+
+/**
+ * ResolveGlobal.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.core.util.VK',
+  [
+    'global!tinymce.util.Tools.resolve'
+  ],
+  function (resolve) {
+    return resolve('tinymce.util.VK');
+  }
+);
+
+/**
+ * ResolveGlobal.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.core.util.Delay',
+  [
+    'global!tinymce.util.Tools.resolve'
+  ],
+  function (resolve) {
+    return resolve('tinymce.util.Delay');
+  }
+);
+
+/**
+ * ResolveGlobal.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.core.util.Tools',
+  [
+    'global!tinymce.util.Tools.resolve'
+  ],
+  function (resolve) {
+    return resolve('tinymce.util.Tools');
+  }
+);
+
+/**
+ * ResolveGlobal.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.core.util.XHR',
+  [
+    'global!tinymce.util.Tools.resolve'
+  ],
+  function (resolve) {
+    return resolve('tinymce.util.XHR');
+  }
+);
+
+define(
+  'tinymce.plugins.link.core.Settings',
+  [
+
+  ],
+  function () {
+    var assumeExternalTargets = function (editorSettings) {
+      return typeof editorSettings.link_assume_external_targets === 'boolean' ? editorSettings.link_assume_external_targets : false;
+    };
+
+    var hasContextToolbar = function (editorSettings) {
+      return typeof editorSettings.link_context_toolbar === 'boolean' ? editorSettings.link_context_toolbar : false;
+    };
+
+    var getLinkList = function (editorSettings) {
+      return editorSettings.link_list;
+    };
+
+    var hasDefaultLinkTarget = function (editorSettings) {
+      return typeof editorSettings.default_link_target === 'string';
+    };
+
+    var getDefaultLinkTarget = function (editorSettings) {
+      return editorSettings.default_link_target;
+    };
+
+    var getTargetList = function (editorSettings) {
+      return editorSettings.target_list;
+    };
+
+    var setTargetList = function (editor, list) {
+      editor.settings.target_list = list;
+    };
+
+    var shouldShowTargetList = function (editorSettings) {
+      return getTargetList(editorSettings) !== false;
+    };
+
+    var getRelList = function (editorSettings) {
+      return editorSettings.rel_list;
+    };
+
+    var hasRelList = function (editorSettings) {
+      return getRelList(editorSettings) !== undefined;
+    };
+
+    var getLinkClassList = function (editorSettings) {
+      return editorSettings.link_class_list;
+    };
+
+    var hasLinkClassList = function (editorSettings) {
+      return getLinkClassList(editorSettings) !== undefined;
+    };
+
+    var shouldShowLinkTitle = function (editorSettings) {
+      return editorSettings.link_title !== false;
+    };
+
+    var allowUnsafeLinkTarget = function (editorSettings) {
+      return typeof editorSettings.allow_unsafe_link_target === 'boolean' ? editorSettings.allow_unsafe_link_target : false;
+    };
+
+    return {
+      assumeExternalTargets: assumeExternalTargets,
+      hasContextToolbar: hasContextToolbar,
+      getLinkList: getLinkList,
+      hasDefaultLinkTarget: hasDefaultLinkTarget,
+      getDefaultLinkTarget: getDefaultLinkTarget,
+      getTargetList: getTargetList,
+      setTargetList: setTargetList,
+      shouldShowTargetList: shouldShowTargetList,
+      getRelList: getRelList,
+      hasRelList: hasRelList,
+      getLinkClassList: getLinkClassList,
+      hasLinkClassList: hasLinkClassList,
+      shouldShowLinkTitle: shouldShowLinkTitle,
+      allowUnsafeLinkTarget: allowUnsafeLinkTarget
+    };
+  }
+);
+
+defineGlobal("global!RegExp", RegExp);
+/**
+ * Utils.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.plugins.link.core.Utils',
+  [
+    'tinymce.core.util.Tools',
+    'tinymce.plugins.link.core.Settings',
+    'global!RegExp'
+  ],
+  function (Tools, Settings, RegExp) {
+
+    var toggleTargetRules = function (rel, isUnsafe) {
+      var rules = 'noopener';
+
+      var addTargetRules = function (rel) {
+        rel = removeTargetRules(rel);
+        return rel ? [rel, rules].join(' ') : rules;
+      };
+
+      var removeTargetRules = function (rel) {
+        var regExp = new RegExp('(' + rules.replace(' ', '|') + ')', 'g');
+        if (rel) {
+          rel = Tools.trim(rel.replace(regExp, ''));
+        }
+        return rel ? rel : null;
+      };
+
+      return isUnsafe ? addTargetRules(rel) : removeTargetRules(rel);
+    };
+
+
+    var trimCaretContainers = function (text) {
+      return text.replace(/\uFEFF/g, '');
+    };
+
+
+    var getAnchorElement = function (editor, selectedElm) {
+      selectedElm = selectedElm || editor.selection.getStart();
+      if (isImageFigure(selectedElm)) {
+        // for an image conained in a figure we look for a link inside the selected element
+        return editor.dom.select('a[href]', selectedElm)[0];
+      } else {
+        return editor.dom.getParent(selectedElm, 'a[href]');
+      }
+    };
+
+
+    var getAnchorText = function (selection, anchorElm) {
+      var text = anchorElm ? (anchorElm.innerText || anchorElm.textContent) : selection.getContent({ format: 'text' });
+      return trimCaretContainers(text);
+    };
+
+
+    var isLink = function (elm) {
+      return elm && elm.nodeName === 'A' && elm.href;
+    };
+
+    var hasLinks = function (elements) {
+      return Tools.grep(elements, isLink).length > 0;
+    };
+
+
+    var isOnlyTextSelected = function (html) {
+      // Partial html and not a fully selected anchor element
+      if (/</.test(html) && (!/^<a [^>]+>[^<]+<\/a>$/.test(html) || html.indexOf('href=') == -1)) {
+        return false;
+      }
+
+      return true;
+    };
+
+
+    var isImageFigure = function (node) {
+      return node && node.nodeName === 'FIGURE' && /\bimage\b/i.test(node.className);
+    };
+
+
+    var link = function (editor, attachState) {
+      return function (data) {
+        editor.undoManager.transact(function () {
+          var selectedElm = editor.selection.getNode();
+          var anchorElm = getAnchorElement(editor, selectedElm);
+
+          var linkAttrs = {
+            href: data.href,
+            target: data.target ? data.target : null,
+            rel: data.rel ? data.rel : null,
+            "class": data["class"] ? data["class"] : null,
+            title: data.title ? data.title : null
+          };
+
+          if (Settings.allowUnsafeLinkTarget(editor.settings) === false) {
+            linkAttrs.rel = toggleTargetRules(linkAttrs.rel, linkAttrs.target == '_blank');
+          }
+
+          if (data.href === attachState.href) {
+            attachState.attach();
+            attachState = {};
+          }
+
+          if (anchorElm) {
+            editor.focus();
+
+            if (data.hasOwnProperty('text')) {
+              if ("innerText" in anchorElm) {
+                anchorElm.innerText = data.text;
+              } else {
+                anchorElm.textContent = data.text;
+              }
+            }
+
+            editor.dom.setAttribs(anchorElm, linkAttrs);
+
+            editor.selection.select(anchorElm);
+            editor.undoManager.add();
+          } else {
+            if (isImageFigure(selectedElm)) {
+              linkImageFigure(editor, selectedElm, linkAttrs);
+            } else if (data.hasOwnProperty('text')) {
+              editor.insertContent(editor.dom.createHTML('a', linkAttrs, editor.dom.encode(data.text)));
+            } else {
+              editor.execCommand('mceInsertLink', false, linkAttrs);
+            }
+          }
+        });
+      };
+    };
+
+
+    var unlink = function (editor) {
+      return function () {
+        editor.undoManager.transact(function () {
+          var node = editor.selection.getNode();
+          if (isImageFigure(node)) {
+            unlinkImageFigure(editor, node);
+          } else {
+            editor.execCommand('unlink');
+          }
+        });
+      };
+    };
+
+
+    var unlinkImageFigure = function (editor, fig) {
+      var a, img;
+      img = editor.dom.select('img', fig)[0];
+      if (img) {
+        a = editor.dom.getParents(img, 'a[href]', fig)[0];
+        if (a) {
+          a.parentNode.insertBefore(img, a);
+          editor.dom.remove(a);
+        }
+      }
+    };
+
+
+    var linkImageFigure = function (editor, fig, attrs) {
+      var a, img;
+      img = editor.dom.select('img', fig)[0];
+      if (img) {
+        a = editor.dom.create('a', attrs);
+        img.parentNode.insertBefore(a, img);
+        a.appendChild(img);
+      }
+    };
+
+    return {
+      link: link,
+      unlink: unlink,
+      isLink: isLink,
+      hasLinks: hasLinks,
+      isOnlyTextSelected: isOnlyTextSelected,
+      getAnchorElement: getAnchorElement,
+      getAnchorText: getAnchorText
+    };
+  }
+);
+/**
+ * Dialog.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.plugins.link.ui.Dialog',
+  [
+    'tinymce.core.util.Delay',
+    'tinymce.core.util.Tools',
+    'tinymce.core.util.XHR',
+    'tinymce.plugins.link.core.Utils',
+    'tinymce.plugins.link.core.Settings'
+  ],
+  function (Delay, Tools, XHR, Utils, Settings) {
+    var attachState = {};
+
+    var createLinkList = function (editor, callback) {
+      var linkList = Settings.getLinkList(editor.settings);
+
+      if (typeof linkList == "string") {
+        XHR.send({
+          url: linkList,
+          success: function (text) {
+            callback(editor, JSON.parse(text));
+          }
+        });
+      } else if (typeof linkList == "function") {
+        linkList(function (list) {
+          callback(editor, list);
+        });
+      } else {
+        callback(editor, linkList);
+      }
+    };
+
+    var buildListItems = function (inputList, itemCallback, startItems) {
+      var appendItems = function (values, output) {
+        output = output || [];
+
+        Tools.each(values, function (item) {
+          var menuItem = { text: item.text || item.title };
+
+          if (item.menu) {
+            menuItem.menu = appendItems(item.menu);
+          } else {
+            menuItem.value = item.value;
+
+            if (itemCallback) {
+              itemCallback(menuItem);
+            }
+          }
+
+          output.push(menuItem);
+        });
+
+        return output;
+      };
+
+      return appendItems(inputList, startItems || []);
+    };
+
+    // Delay confirm since onSubmit will move focus
+    var delayedConfirm = function (editor, message, callback) {
+      var rng = editor.selection.getRng();
+
+      Delay.setEditorTimeout(editor, function () {
+        editor.windowManager.confirm(message, function (state) {
+          editor.selection.setRng(rng);
+          callback(state);
+        });
+      });
+    };
+
+    var showDialog = function (editor, linkList) {
+      var data = {}, selection = editor.selection, dom = editor.dom, anchorElm, initialText;
+      var win, onlyText, textListCtrl, linkListCtrl, relListCtrl, targetListCtrl, classListCtrl, linkTitleCtrl, value;
+
+      var linkListChangeHandler = function (e) {
+        var textCtrl = win.find('#text');
+
+        if (!textCtrl.value() || (e.lastControl && textCtrl.value() == e.lastControl.text())) {
+          textCtrl.value(e.control.text());
+        }
+
+        win.find('#href').value(e.control.value());
+      };
+
+      var buildAnchorListControl = function (url) {
+        var anchorList = [];
+
+        Tools.each(editor.dom.select('a:not([href])'), function (anchor) {
+          var id = anchor.name || anchor.id;
+
+          if (id) {
+            anchorList.push({
+              text: id,
+              value: '#' + id,
+              selected: url.indexOf('#' + id) != -1
+            });
+          }
+        });
+
+        if (anchorList.length) {
+          anchorList.unshift({ text: 'None', value: '' });
+
+          return {
+            name: 'anchor',
+            type: 'listbox',
+            label: 'Anchors',
+            values: anchorList,
+            onselect: linkListChangeHandler
+          };
+        }
+      };
+
+      var updateText = function () {
+        if (!initialText && onlyText && !data.text) {
+          this.parent().parent().find('#text')[0].value(this.value());
+        }
+      };
+
+      var urlChange = function (e) {
+        var meta = e.meta || {};
+
+        if (linkListCtrl) {
+          linkListCtrl.value(editor.convertURL(this.value(), 'href'));
+        }
+
+        Tools.each(e.meta, function (value, key) {
+          var inp = win.find('#' + key);
+
+          if (key === 'text') {
+            if (initialText.length === 0) {
+              inp.value(value);
+              data.text = value;
+            }
+          } else {
+            inp.value(value);
+          }
+        });
+
+        if (meta.attach) {
+          attachState = {
+            href: this.value(),
+            attach: meta.attach
+          };
+        }
+
+        if (!meta.text) {
+          updateText.call(this);
+        }
+      };
+
+      var onBeforeCall = function (e) {
+        e.meta = win.toJSON();
+      };
+
+      onlyText = Utils.isOnlyTextSelected(selection.getContent());
+      anchorElm = Utils.getAnchorElement(editor);
+
+      data.text = initialText = Utils.getAnchorText(editor.selection, anchorElm);
+      data.href = anchorElm ? dom.getAttrib(anchorElm, 'href') : '';
+
+      if (anchorElm) {
+        data.target = dom.getAttrib(anchorElm, 'target');
+      } else if (Settings.hasDefaultLinkTarget(editor.settings)) {
+        data.target = Settings.getDefaultLinkTarget(editor.settings);
+      }
+
+      if ((value = dom.getAttrib(anchorElm, 'rel'))) {
+        data.rel = value;
+      }
+
+      if ((value = dom.getAttrib(anchorElm, 'class'))) {
+        data['class'] = value;
+      }
+
+      if ((value = dom.getAttrib(anchorElm, 'title'))) {
+        data.title = value;
+      }
+
+      if (onlyText) {
+        textListCtrl = {
+          name: 'text',
+          type: 'textbox',
+          size: 40,
+          label: 'Text to display',
+          onchange: function () {
+            data.text = this.value();
+          }
+        };
+      }
+
+      if (linkList) {
+        linkListCtrl = {
+          type: 'listbox',
+          label: 'Link list',
+          values: buildListItems(
+            linkList,
+            function (item) {
+              item.value = editor.convertURL(item.value || item.url, 'href');
+            },
+            [{ text: 'None', value: '' }]
+          ),
+          onselect: linkListChangeHandler,
+          value: editor.convertURL(data.href, 'href'),
+          onPostRender: function () {
+            /*eslint consistent-this:0*/
+            linkListCtrl = this;
+          }
+        };
+      }
+
+      if (Settings.shouldShowTargetList(editor.settings)) {
+        if (Settings.getTargetList(editor.settings) === undefined) {
+          Settings.setTargetList(editor, [
+            { text: 'None', value: '' },
+            { text: 'New window', value: '_blank' }
+          ]);
+        }
+
+        targetListCtrl = {
+          name: 'target',
+          type: 'listbox',
+          label: 'Target',
+          values: buildListItems(Settings.getTargetList(editor.settings))
+        };
+      }
+
+      if (Settings.hasRelList(editor.settings)) {
+        relListCtrl = {
+          name: 'rel',
+          type: 'listbox',
+          label: 'Rel',
+          values: buildListItems(Settings.getRelList(editor.settings))
+        };
+      }
+
+      if (Settings.hasLinkClassList(editor.settings)) {
+        classListCtrl = {
+          name: 'class',
+          type: 'listbox',
+          label: 'Class',
+          values: buildListItems(
+            Settings.getLinkClassList(editor.settings),
+            function (item) {
+              if (item.value) {
+                item.textStyle = function () {
+                  return editor.formatter.getCssText({ inline: 'a', classes: [item.value] });
+                };
+              }
+            }
+          )
+        };
+      }
+
+      if (Settings.shouldShowLinkTitle(editor.settings)) {
+        linkTitleCtrl = {
+          name: 'title',
+          type: 'textbox',
+          label: 'Title',
+          value: data.title
+        };
+      }
+
+      win = editor.windowManager.open({
+        title: 'Insert link',
+        data: data,
+        body: [
+          {
+            name: 'href',
+            type: 'filepicker',
+            filetype: 'file',
+            size: 40,
+            autofocus: true,
+            label: 'Url',
+            onchange: urlChange,
+            onkeyup: updateText,
+            onbeforecall: onBeforeCall
+          },
+          textListCtrl,
+          linkTitleCtrl,
+          buildAnchorListControl(data.href),
+          linkListCtrl,
+          relListCtrl,
+          targetListCtrl,
+          classListCtrl
+        ],
+        onSubmit: function (e) {
+          var assumeExternalTargets = Settings.assumeExternalTargets(editor.settings);
+          var insertLink = Utils.link(editor, attachState);
+          var removeLink = Utils.unlink(editor);
+
+          var resultData = Tools.extend({}, data, e.data);
+          /*eslint dot-notation: 0*/
+          var href = resultData.href;
+
+          if (!href) {
+            removeLink();
+            return;
+          }
+
+          if (!onlyText || resultData.text === initialText) {
+            delete resultData.text;
+          }
+
+          // Is email and not //user@domain.com
+          if (href.indexOf('@') > 0 && href.indexOf('//') == -1 && href.indexOf('mailto:') == -1) {
+            delayedConfirm(
+              editor,
+              'The URL you entered seems to be an email address. Do you want to add the required mailto: prefix?',
+              function (state) {
+                if (state) {
+                  resultData.href = 'mailto:' + href;
+                }
+                insertLink(resultData);
+              }
+            );
+            return;
+          }
+
+          // Is not protocol prefixed
+          if ((assumeExternalTargets === true && !/^\w+:/i.test(href)) ||
+            (assumeExternalTargets === false && /^\s*www[\.|\d\.]/i.test(href))) {
+            delayedConfirm(
+              editor,
+              'The URL you entered seems to be an external link. Do you want to add the required http:// prefix?',
+              function (state) {
+                if (state) {
+                  resultData.href = 'http://' + href;
+                }
+                insertLink(resultData);
+              }
+            );
+            return;
+          }
+
+          insertLink(resultData);
+        }
+      });
+    };
+
+    var open = function (editor) {
+      createLinkList(editor, showDialog);
+    };
+
+    return {
+      open: open
+    };
+  }
+);
+/**
+ * ResolveGlobal.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.core.dom.DOMUtils',
+  [
+    'global!tinymce.util.Tools.resolve'
+  ],
+  function (resolve) {
+    return resolve('tinymce.dom.DOMUtils');
+  }
+);
+
+/**
+ * ResolveGlobal.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.core.Env',
+  [
+    'global!tinymce.util.Tools.resolve'
+  ],
+  function (resolve) {
+    return resolve('tinymce.Env');
+  }
+);
+
+/**
+ * OpenUrl.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.plugins.link.core.OpenUrl',
+  [
+    'tinymce.core.dom.DOMUtils',
+    'tinymce.core.Env'
+  ],
+  function (DOMUtils, Env) {
+    var appendClickRemove = function (link, evt) {
+      document.body.appendChild(link);
+      link.dispatchEvent(evt);
+      document.body.removeChild(link);
+    };
+
+    var open = function (url) {
+      // Chrome and Webkit has implemented noopener and works correctly with/without popup blocker
+      // Firefox has it implemented noopener but when the popup blocker is activated it doesn't work
+      // Edge has only implemented noreferrer and it seems to remove opener as well
+      // Older IE versions pre IE 11 falls back to a window.open approach
+      if (!Env.ie || Env.ie > 10) {
+        var link = document.createElement('a');
+        link.target = '_blank';
+        link.href = url;
+        link.rel = 'noreferrer noopener';
+
+        var evt = document.createEvent('MouseEvents');
+        evt.initMouseEvent('click', true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
+
+        appendClickRemove(link, evt);
+      } else {
+        var win = window.open('', '_blank');
+        if (win) {
+          win.opener = null;
+          var doc = win.document;
+          doc.open();
+          doc.write('<meta http-equiv="refresh" content="0; url=' + DOMUtils.DOM.encode(url) + '">');
+          doc.close();
+        }
+      }
+    };
+
+    return {
+      open: open
+    };
+  }
+);
+/**
+ * Actions.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.plugins.link.core.Actions',
+  [
+    'tinymce.core.util.VK',
+    'tinymce.plugins.link.ui.Dialog',
+    'tinymce.plugins.link.core.OpenUrl',
+    'tinymce.plugins.link.core.Utils',
+    'tinymce.plugins.link.core.Settings'
+  ],
+  function (VK, Dialog, OpenUrl, Utils, Settings) {
+    var getLink = function (editor, elm) {
+      return editor.dom.getParent(elm, 'a[href]');
+    };
+
+    var getSelectedLink = function (editor) {
+      return getLink(editor, editor.selection.getStart());
+    };
+
+    var getHref = function (elm) {
+      // Returns the real href value not the resolved a.href value
+      var href = elm.getAttribute('data-mce-href');
+      return href ? href : elm.getAttribute('href');
+    };
+
+    var isContextMenuVisible = function (editor) {
+      var contextmenu = editor.plugins.contextmenu;
+      return contextmenu ? contextmenu.isContextMenuVisible() : false;
+    };
+
+    var hasOnlyAltModifier = function (e) {
+      return e.altKey === true && e.shiftKey === false && e.ctrlKey === false && e.metaKey === false;
+    };
+
+    var gotoLink = function (editor, a) {
+      if (a) {
+        var href = getHref(a);
+        if (/^#/.test(href)) {
+          var targetEl = editor.$(href);
+          if (targetEl.length) {
+            editor.selection.scrollIntoView(targetEl[0], true);
+          }
+        } else {
+          OpenUrl.open(a.href);
+        }
+      }
+    };
+
+    var openDialog = function (editor) {
+      return function () {
+        Dialog.open(editor);
+      };
+    };
+
+    var gotoSelectedLink = function (editor) {
+      return function () {
+        gotoLink(editor, getSelectedLink(editor));
+      };
+    };
+
+    var leftClickedOnAHref = function (editor) {
+      return function (elm) {
+        var sel, rng, node;
+        if (Settings.hasContextToolbar(editor.settings) && !isContextMenuVisible(editor) && Utils.isLink(elm)) {
+          sel = editor.selection;
+          rng = sel.getRng();
+          node = rng.startContainer;
+          // ignore cursor positions at the beginning/end (to make context toolbar less noisy)
+          if (node.nodeType == 3 && sel.isCollapsed() && rng.startOffset > 0 && rng.startOffset < node.data.length) {
+            return true;
+          }
+        }
+        return false;
+      };
+    };
+
+    var setupGotoLinks = function (editor) {
+      editor.on('click', function (e) {
+        var link = getLink(editor, e.target);
+        if (link && VK.metaKeyPressed(e)) {
+          e.preventDefault();
+          gotoLink(editor, link);
+        }
+      });
+
+      editor.on('keydown', function (e) {
+        var link = getSelectedLink(editor);
+        if (link && e.keyCode === 13 && hasOnlyAltModifier(e)) {
+          e.preventDefault();
+          gotoLink(editor, link);
+        }
+      });
+    };
+
+    var toggleActiveState = function (editor) {
+      return function () {
+        var self = this;
+        editor.on('nodechange', function (e) {
+          self.active(!editor.readonly && !!Utils.getAnchorElement(editor, e.element));
+        });
+      };
+    };
+
+    var toggleViewLinkState = function (editor) {
+      return function () {
+        var self = this;
+
+        var toggleVisibility = function (e) {
+          if (Utils.hasLinks(e.parents)) {
+            self.show();
+          } else {
+            self.hide();
+          }
+        };
+
+        if (!Utils.hasLinks(editor.dom.getParents(editor.selection.getStart()))) {
+          self.hide();
+        }
+
+        editor.on('nodechange', toggleVisibility);
+
+        self.on('remove', function () {
+          editor.off('nodechange', toggleVisibility);
+        });
+      };
+    };
+
+    return {
+      openDialog: openDialog,
+      gotoSelectedLink: gotoSelectedLink,
+      leftClickedOnAHref: leftClickedOnAHref,
+      setupGotoLinks: setupGotoLinks,
+      toggleActiveState: toggleActiveState,
+      toggleViewLinkState: toggleViewLinkState
+    };
+  }
+);
+/**
+ * Controls.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.plugins.link.ui.Controls',
+  [
+    'tinymce.plugins.link.core.Actions',
+    'tinymce.plugins.link.core.Utils'
+  ],
+  function (Actions, Utils) {
+
+    var setupButtons = function (editor) {
+      editor.addButton('link', {
+        icon: 'link',
+        tooltip: 'Insert/edit link',
+        shortcut: 'Meta+K',
+        onclick: Actions.openDialog(editor),
+        onpostrender: Actions.toggleActiveState(editor)
+      });
+
+      editor.addButton('unlink', {
+        icon: 'unlink',
+        tooltip: 'Remove link',
+        onclick: Utils.unlink(editor),
+        onpostrender: Actions.toggleActiveState(editor)
+      });
+
+      if (editor.addContextToolbar) {
+        editor.addButton('openlink', {
+          icon: 'newtab',
+          tooltip: 'Open link',
+          onclick: Actions.gotoSelectedLink(editor)
+        });
+      }
+    };
+
+    var setupMenuItems = function (editor) {
+      editor.addMenuItem('openlink', {
+        text: 'Open link',
+        icon: 'newtab',
+        onclick: Actions.gotoSelectedLink(editor),
+        onPostRender: Actions.toggleViewLinkState(editor),
+        prependToContext: true
+      });
+
+      editor.addMenuItem('link', {
+        icon: 'link',
+        text: 'Link',
+        shortcut: 'Meta+K',
+        onclick: Actions.openDialog(editor),
+        stateSelector: 'a[href]',
+        context: 'insert',
+        prependToContext: true
+      });
+    };
+
+    var setupContextToolbars = function (editor) {
+      if (editor.addContextToolbar) {
+        editor.addContextToolbar(
+          Actions.leftClickedOnAHref(editor),
+          'openlink | link unlink'
+        );
+      }
+    };
+
+    return {
+      setupButtons: setupButtons,
+      setupMenuItems: setupMenuItems,
+      setupContextToolbars: setupContextToolbars
+    };
+  }
+);
+/**
+ * Plugin.js
+ *
+ * Released under LGPL License.
+ * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define(
+  'tinymce.plugins.link.Plugin',
+  [
+    'tinymce.core.PluginManager',
+    'tinymce.plugins.link.core.Actions',
+    'tinymce.plugins.link.ui.Controls'
+  ],
+  function (PluginManager, Actions, Controls) {
+    PluginManager.add('link', function (editor) {
+      Controls.setupButtons(editor);
+      Controls.setupMenuItems(editor);
+      Controls.setupContextToolbars(editor);
+      Actions.setupGotoLinks(editor);
+      editor.addShortcut('Meta+K', '', Actions.openDialog(editor));
+      editor.addCommand('mceLink', Actions.openDialog(editor));
+    });
+
+    return function () { };
+  }
+);
+dem('tinymce.plugins.link.Plugin')();
+})();
diff --git a/src/wp-includes/js/tinymce/plugins/link/plugin.min.js b/src/wp-includes/js/tinymce/plugins/link/plugin.min.js
new file mode 100644
index 0000000000..37b1eab4be
--- /dev/null
+++ b/src/wp-includes/js/tinymce/plugins/link/plugin.min.js
@@ -0,0 +1 @@
+!function(){var a={},b=function(b){for(var c=a[b],e=c.deps,f=c.defn,g=e.length,h=new Array(g),i=0;i<g;++i)h[i]=d(e[i]);var j=f.apply(null,h);if(void 0===j)throw"module ["+b+"] returned undefined";c.instance=j},c=function(b,c,d){if("string"!=typeof b)throw"module id must be a string";if(void 0===c)throw"no dependencies for "+b;if(void 0===d)throw"no definition function for "+b;a[b]={deps:c,defn:d,instance:void 0}},d=function(c){var d=a[c];if(void 0===d)throw"module ["+c+"] was undefined";return void 0===d.instance&&b(c),d.instance},e=function(a,b){for(var c=a.length,e=new Array(c),f=0;f<c;++f)e.push(d(a[f]));b.apply(null,b)},f={};f.bolt={module:{api:{define:c,require:e,demand:d}}};var g=c,h=function(a,b){g(a,[],function(){return b})};h("4",tinymce.util.Tools.resolve),g("1",["4"],function(a){return a("tinymce.PluginManager")}),g("5",["4"],function(a){return a("tinymce.util.VK")}),g("a",["4"],function(a){return a("tinymce.util.Delay")}),g("b",["4"],function(a){return a("tinymce.util.Tools")}),g("c",["4"],function(a){return a("tinymce.util.XHR")}),g("9",[],function(){var a=function(a){return"boolean"==typeof a.link_assume_external_targets&&a.link_assume_external_targets},b=function(a){return"boolean"==typeof a.link_context_toolbar&&a.link_context_toolbar},c=function(a){return a.link_list},d=function(a){return"string"==typeof a.default_link_target},e=function(a){return a.default_link_target},f=function(a){return a.target_list},g=function(a,b){a.settings.target_list=b},h=function(a){return f(a)!==!1},i=function(a){return a.rel_list},j=function(a){return void 0!==i(a)},k=function(a){return a.link_class_list},l=function(a){return void 0!==k(a)},m=function(a){return a.link_title!==!1},n=function(a){return"boolean"==typeof a.allow_unsafe_link_target&&a.allow_unsafe_link_target};return{assumeExternalTargets:a,hasContextToolbar:b,getLinkList:c,hasDefaultLinkTarget:d,getDefaultLinkTarget:e,getTargetList:f,setTargetList:g,shouldShowTargetList:h,getRelList:i,hasRelList:j,getLinkClassList:k,hasLinkClassList:l,shouldShowLinkTitle:m,allowUnsafeLinkTarget:n}}),h("d",RegExp),g("8",["b","9","d"],function(a,b,c){var d=function(b,d){var e="noopener",f=function(a){return a=g(a),a?[a,e].join(" "):e},g=function(b){var d=new c("("+e.replace(" ","|")+")","g");return b&&(b=a.trim(b.replace(d,""))),b?b:null};return d?f(b):g(b)},e=function(a){return a.replace(/\uFEFF/g,"")},f=function(a,b){return b=b||a.selection.getStart(),k(b)?a.dom.select("a[href]",b)[0]:a.dom.getParent(b,"a[href]")},g=function(a,b){var c=b?b.innerText||b.textContent:a.getContent({format:"text"});return e(c)},h=function(a){return a&&"A"===a.nodeName&&a.href},i=function(b){return a.grep(b,h).length>0},j=function(a){return!(/</.test(a)&&(!/^<a [^>]+>[^<]+<\/a>$/.test(a)||a.indexOf("href=")==-1))},k=function(a){return a&&"FIGURE"===a.nodeName&&/\bimage\b/i.test(a.className)},l=function(a,c){return function(e){a.undoManager.transact(function(){var g=a.selection.getNode(),h=f(a,g),i={href:e.href,target:e.target?e.target:null,rel:e.rel?e.rel:null,"class":e["class"]?e["class"]:null,title:e.title?e.title:null};b.allowUnsafeLinkTarget(a.settings)===!1&&(i.rel=d(i.rel,"_blank"==i.target)),e.href===c.href&&(c.attach(),c={}),h?(a.focus(),e.hasOwnProperty("text")&&("innerText"in h?h.innerText=e.text:h.textContent=e.text),a.dom.setAttribs(h,i),a.selection.select(h),a.undoManager.add()):k(g)?o(a,g,i):e.hasOwnProperty("text")?a.insertContent(a.dom.createHTML("a",i,a.dom.encode(e.text))):a.execCommand("mceInsertLink",!1,i)})}},m=function(a){return function(){a.undoManager.transact(function(){var b=a.selection.getNode();k(b)?n(a,b):a.execCommand("unlink")})}},n=function(a,b){var c,d;d=a.dom.select("img",b)[0],d&&(c=a.dom.getParents(d,"a[href]",b)[0],c&&(c.parentNode.insertBefore(d,c),a.dom.remove(c)))},o=function(a,b,c){var d,e;e=a.dom.select("img",b)[0],e&&(d=a.dom.create("a",c),e.parentNode.insertBefore(d,e),d.appendChild(e))};return{link:l,unlink:m,isLink:h,hasLinks:i,isOnlyTextSelected:j,getAnchorElement:f,getAnchorText:g}}),g("6",["a","b","c","8","9"],function(a,b,c,d,e){var f={},g=function(a,b){var d=e.getLinkList(a.settings);"string"==typeof d?c.send({url:d,success:function(c){b(a,JSON.parse(c))}}):"function"==typeof d?d(function(c){b(a,c)}):b(a,d)},h=function(a,c,d){var e=function(a,d){return d=d||[],b.each(a,function(a){var b={text:a.text||a.title};a.menu?b.menu=e(a.menu):(b.value=a.value,c&&c(b)),d.push(b)}),d};return e(a,d||[])},i=function(b,c,d){var e=b.selection.getRng();a.setEditorTimeout(b,function(){b.windowManager.confirm(c,function(a){b.selection.setRng(e),d(a)})})},j=function(a,c){var g,j,k,l,m,n,o,p,q,r,s,t={},u=a.selection,v=a.dom,w=function(a){var b=k.find("#text");(!b.value()||a.lastControl&&b.value()==a.lastControl.text())&&b.value(a.control.text()),k.find("#href").value(a.control.value())},x=function(c){var d=[];if(b.each(a.dom.select("a:not([href])"),function(a){var b=a.name||a.id;b&&d.push({text:b,value:"#"+b,selected:c.indexOf("#"+b)!=-1})}),d.length)return d.unshift({text:"None",value:""}),{name:"anchor",type:"listbox",label:"Anchors",values:d,onselect:w}},y=function(){j||!l||t.text||this.parent().parent().find("#text")[0].value(this.value())},z=function(c){var d=c.meta||{};n&&n.value(a.convertURL(this.value(),"href")),b.each(c.meta,function(a,b){var c=k.find("#"+b);"text"===b?0===j.length&&(c.value(a),t.text=a):c.value(a)}),d.attach&&(f={href:this.value(),attach:d.attach}),d.text||y.call(this)},A=function(a){a.meta=k.toJSON()};l=d.isOnlyTextSelected(u.getContent()),g=d.getAnchorElement(a),t.text=j=d.getAnchorText(a.selection,g),t.href=g?v.getAttrib(g,"href"):"",g?t.target=v.getAttrib(g,"target"):e.hasDefaultLinkTarget(a.settings)&&(t.target=e.getDefaultLinkTarget(a.settings)),(s=v.getAttrib(g,"rel"))&&(t.rel=s),(s=v.getAttrib(g,"class"))&&(t["class"]=s),(s=v.getAttrib(g,"title"))&&(t.title=s),l&&(m={name:"text",type:"textbox",size:40,label:"Text to display",onchange:function(){t.text=this.value()}}),c&&(n={type:"listbox",label:"Link list",values:h(c,function(b){b.value=a.convertURL(b.value||b.url,"href")},[{text:"None",value:""}]),onselect:w,value:a.convertURL(t.href,"href"),onPostRender:function(){n=this}}),e.shouldShowTargetList(a.settings)&&(void 0===e.getTargetList(a.settings)&&e.setTargetList(a,[{text:"None",value:""},{text:"New window",value:"_blank"}]),p={name:"target",type:"listbox",label:"Target",values:h(e.getTargetList(a.settings))}),e.hasRelList(a.settings)&&(o={name:"rel",type:"listbox",label:"Rel",values:h(e.getRelList(a.settings))}),e.hasLinkClassList(a.settings)&&(q={name:"class",type:"listbox",label:"Class",values:h(e.getLinkClassList(a.settings),function(b){b.value&&(b.textStyle=function(){return a.formatter.getCssText({inline:"a",classes:[b.value]})})})}),e.shouldShowLinkTitle(a.settings)&&(r={name:"title",type:"textbox",label:"Title",value:t.title}),k=a.windowManager.open({title:"Insert link",data:t,body:[{name:"href",type:"filepicker",filetype:"file",size:40,autofocus:!0,label:"Url",onchange:z,onkeyup:y,onbeforecall:A},m,r,x(t.href),n,o,p,q],onSubmit:function(c){var g=e.assumeExternalTargets(a.settings),h=d.link(a,f),k=d.unlink(a),m=b.extend({},t,c.data),n=m.href;return n?(l&&m.text!==j||delete m.text,n.indexOf("@")>0&&n.indexOf("//")==-1&&n.indexOf("mailto:")==-1?void i(a,"The URL you entered seems to be an email address. Do you want to add the required mailto: prefix?",function(a){a&&(m.href="mailto:"+n),h(m)}):g===!0&&!/^\w+:/i.test(n)||g===!1&&/^\s*www[\.|\d\.]/i.test(n)?void i(a,"The URL you entered seems to be an external link. Do you want to add the required http:// prefix?",function(a){a&&(m.href="http://"+n),h(m)}):void h(m)):void k()}})},k=function(a){g(a,j)};return{open:k}}),g("e",["4"],function(a){return a("tinymce.dom.DOMUtils")}),g("f",["4"],function(a){return a("tinymce.Env")}),g("7",["e","f"],function(a,b){var c=function(a,b){document.body.appendChild(a),a.dispatchEvent(b),document.body.removeChild(a)},d=function(d){if(!b.ie||b.ie>10){var e=document.createElement("a");e.target="_blank",e.href=d,e.rel="noreferrer noopener";var f=document.createEvent("MouseEvents");f.initMouseEvent("click",!0,!0,window,0,0,0,0,0,!1,!1,!1,!1,0,null),c(e,f)}else{var g=window.open("","_blank");if(g){g.opener=null;var h=g.document;h.open(),h.write('<meta http-equiv="refresh" content="0; url='+a.DOM.encode(d)+'">'),h.close()}}};return{open:d}}),g("2",["5","6","7","8","9"],function(a,b,c,d,e){var f=function(a,b){return a.dom.getParent(b,"a[href]")},g=function(a){return f(a,a.selection.getStart())},h=function(a){var b=a.getAttribute("data-mce-href");return b?b:a.getAttribute("href")},i=function(a){var b=a.plugins.contextmenu;return!!b&&b.isContextMenuVisible()},j=function(a){return a.altKey===!0&&a.shiftKey===!1&&a.ctrlKey===!1&&a.metaKey===!1},k=function(a,b){if(b){var d=h(b);if(/^#/.test(d)){var e=a.$(d);e.length&&a.selection.scrollIntoView(e[0],!0)}else c.open(b.href)}},l=function(a){return function(){b.open(a)}},m=function(a){return function(){k(a,g(a))}},n=function(a){return function(b){var c,f,g;return!!(e.hasContextToolbar(a.settings)&&!i(a)&&d.isLink(b)&&(c=a.selection,f=c.getRng(),g=f.startContainer,3==g.nodeType&&c.isCollapsed()&&f.startOffset>0&&f.startOffset<g.data.length))}},o=function(b){b.on("click",function(c){var d=f(b,c.target);d&&a.metaKeyPressed(c)&&(c.preventDefault(),k(b,d))}),b.on("keydown",function(a){var c=g(b);c&&13===a.keyCode&&j(a)&&(a.preventDefault(),k(b,c))})},p=function(a){return function(){var b=this;a.on("nodechange",function(c){b.active(!a.readonly&&!!d.getAnchorElement(a,c.element))})}},q=function(a){return function(){var b=this,c=function(a){d.hasLinks(a.parents)?b.show():b.hide()};d.hasLinks(a.dom.getParents(a.selection.getStart()))||b.hide(),a.on("nodechange",c),b.on("remove",function(){a.off("nodechange",c)})}};return{openDialog:l,gotoSelectedLink:m,leftClickedOnAHref:n,setupGotoLinks:o,toggleActiveState:p,toggleViewLinkState:q}}),g("3",["2","8"],function(a,b){var c=function(c){c.addButton("link",{icon:"link",tooltip:"Insert/edit link",shortcut:"Meta+K",onclick:a.openDialog(c),onpostrender:a.toggleActiveState(c)}),c.addButton("unlink",{icon:"unlink",tooltip:"Remove link",onclick:b.unlink(c),onpostrender:a.toggleActiveState(c)}),c.addContextToolbar&&c.addButton("openlink",{icon:"newtab",tooltip:"Open link",onclick:a.gotoSelectedLink(c)})},d=function(b){b.addMenuItem("openlink",{text:"Open link",icon:"newtab",onclick:a.gotoSelectedLink(b),onPostRender:a.toggleViewLinkState(b),prependToContext:!0}),b.addMenuItem("link",{icon:"link",text:"Link",shortcut:"Meta+K",onclick:a.openDialog(b),stateSelector:"a[href]",context:"insert",prependToContext:!0})},e=function(b){b.addContextToolbar&&b.addContextToolbar(a.leftClickedOnAHref(b),"openlink | link unlink")};return{setupButtons:c,setupMenuItems:d,setupContextToolbars:e}}),g("0",["1","2","3"],function(a,b,c){return a.add("link",function(a){c.setupButtons(a),c.setupMenuItems(a),c.setupContextToolbars(a),b.setupGotoLinks(a),a.addShortcut("Meta+K","",b.openDialog(a)),a.addCommand("mceLink",b.openDialog(a))}),function(){}}),d("0")()}();
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