Replace all jQuery tooltip API calls

In copy_to_clipboard.js replace the old tooltip
calls with the tooltips facade API.

app/assets/javascripts/behaviors/copy_to_clipboard.js

 import $ from 'jquery';
 import Clipboard from 'clipboard';
 import { sprintf, __ } from '~/locale';
+import { fixTitle, show } from '~/tooltips';
 
 function showTooltip(target, title) {
-  const $target = $(target);
-  const originalTitle = $target.data('originalTitle');
+  const { originalTitle } = target.dataset;
+  const hideTooltip = () => {
+    target.removeEventListener('mouseout', hideTooltip);
+    setTimeout(() => {
+      target.setAttribute('title', originalTitle);
+      fixTitle(target);
+    }, 300);
+  };
 
-  if (!$target.data('hideTooltip')) {
-    $target
-      .attr('title', title)
-      .tooltip('_fixTitle')
-      .tooltip('show')
-      .attr('title', originalTitle)
-      .tooltip('_fixTitle');
-  }
+  target.setAttribute('title', title);
+
+  fixTitle(target);
+  show(target);
+
+  target.addEventListener('mouseout', hideTooltip);
 }
 
 function genericSuccess(e) {

app/assets/javascripts/tooltips/index.js

 import Vue from 'vue';
 import jQuery from 'jquery';
-import { toArray, isFunction } from 'lodash';
+import { toArray, isFunction, isElement } from 'lodash';
 import Tooltips from './components/tooltips.vue';
 
 let app;
@@ -54,7 +54,11 @@ const handleTooltipEvent = (rootTarget, e, selector, config = {}) => {
   }
 };
 
-const applyToElements = (elements, handler) => toArray(elements).forEach(handler);
+const applyToElements = (elements, handler) => {
+  const iterable = isElement(elements) ? [elements] : toArray(elements);
+
+  toArray(iterable).forEach(handler);
+};
 
 const invokeBootstrapApi = (elements, method) => {
   if (isFunction(elements.tooltip)) {