[Glitch] Use the new JSX transform everywhere

Port 8f66126b10 to glitch-soc

app/javascript/flavours/glitch/features/compose/components/dropdown_menu.jsx

@@ -1,6 +1,6 @@
 //  Package imports.
 import PropTypes from 'prop-types';
-import React from 'react';
+import { PureComponent, Fragment } from 'react';
 import classNames from 'classnames';
 import { supportsPassiveEvents } from 'detect-passive-events';
 
@@ -10,7 +10,7 @@ import { Icon } from 'flavours/glitch/components/icon';
 const listenerOptions = supportsPassiveEvents ? { passive: true, capture: true } : true;
 
 //  The component.
-export default class ComposerOptionsDropdownContent extends React.PureComponent {
+export default class ComposerOptionsDropdownContent extends PureComponent {
 
   static propTypes = {
     items: PropTypes.arrayOf(PropTypes.shape({
@@ -152,14 +152,14 @@ export default class ComposerOptionsDropdownContent extends React.PureComponent
 
     if (!contents) {
       contents = (
-        <React.Fragment>
+        <Fragment>
           {icon && <Icon className='icon' fixedWidth id={icon} />}
 
           <div className='privacy-dropdown__option__content'>
             <strong>{text}</strong>
             {meta}
           </div>
-        </React.Fragment>
+        </Fragment>
       );
     }