Migrate away from React.createClass for async-components. React 16 :D

src/async-components/views/dialogs/EncryptedEventDialog.js

@@ -15,12 +15,13 @@ limitations under the License.
 */
 
 const React = require("react");
+import createReactClass from 'create-react-class';
 import PropTypes from 'prop-types';
 import { _t } from '../../../languageHandler';
 const sdk = require('../../../index');
 const MatrixClientPeg = require("../../../MatrixClientPeg");
 
-module.exports = React.createClass({
+module.exports = createReactClass({
     displayName: 'EncryptedEventDialog',
 
     propTypes: {

src/async-components/views/dialogs/ExportE2eKeysDialog.js

@@ -17,6 +17,7 @@ limitations under the License.
 import FileSaver from 'file-saver';
 import React from 'react';
 import PropTypes from 'prop-types';
+import createReactClass from 'create-react-class';
 import { _t } from '../../../languageHandler';
 
 import { MatrixClient } from 'matrix-js-sdk';
@@ -26,7 +27,7 @@ import sdk from '../../../index';
 const PHASE_EDIT = 1;
 const PHASE_EXPORTING = 2;
 
-export default React.createClass({
+export default createReactClass({
     displayName: 'ExportE2eKeysDialog',
 
     propTypes: {

src/async-components/views/dialogs/ImportE2eKeysDialog.js

@@ -16,6 +16,7 @@ limitations under the License.
 
 import React from 'react';
 import PropTypes from 'prop-types';
+import createReactClass from 'create-react-class';
 
 import { MatrixClient } from 'matrix-js-sdk';
 import * as MegolmExportEncryption from '../../../utils/MegolmExportEncryption';
@@ -37,7 +38,7 @@ function readFileAsArrayBuffer(file) {
 const PHASE_EDIT = 1;
 const PHASE_IMPORTING = 2;
 
-export default React.createClass({
+export default createReactClass({
     displayName: 'ImportE2eKeysDialog',
 
     propTypes: {

src/async-components/views/dialogs/keybackup/CreateKeyBackupDialog.js

@@ -15,6 +15,7 @@ limitations under the License.
 */
 
 import React from 'react';
+import createReactClass from 'create-react-class';
 import sdk from '../../../../index';
 import MatrixClientPeg from '../../../../MatrixClientPeg';
 import { scorePassword } from '../../../../utils/PasswordScorer';
@@ -48,7 +49,7 @@ function selectText(target) {
  * Walks the user through the process of creating an e2e key backup
  * on the server.
  */
-export default React.createClass({
+export default createReactClass({
     getInitialState: function() {
         return {
             phase: PHASE_PASSPHRASE,