Redesign video player (#4911)

* Redesign video player

* Use new video player on static public pages too

* Use media gallery component on static public pages too

* Pause video when hiding it

* Full-screen sizing on WebKit

* Add aria labels to video player buttons

* Display link card on public status page

* Fix fullscreen from modal sizing issue

* Remove contain: strict property to fix fullscreen from columns

app/javascript/mastodon/containers/card_container.js

@@ -0,0 +1,18 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import Card from '../features/status/components/card';
+import { fromJS } from 'immutable';
+
+export default class CardContainer extends React.PureComponent {
+
+  static propTypes = {
+    locale: PropTypes.string,
+    card: PropTypes.array.isRequired,
+  };
+
+  render () {
+    const { card, ...props } = this.props;
+    return <Card card={fromJS(card)} {...props} />;
+  }
+
+}