Merge pull request #3761 from matrix-org/travis/babel7-wp-es6-export

Convert CommonJS exports to ES6 exports

src/components/structures/auth/Login.js

@@ -54,7 +54,7 @@ _td("General failure");
 /**
  * A wire component which glues together login UI components and Login logic
  */
-module.exports = createReactClass({
+export default createReactClass({
     displayName: 'Login',
 
     propTypes: {