Improve eslint rules (#3147)

* Add semi to ESLint rules

* Add padded-blocks to ESLint rules

* Add comma-dangle to ESLint rules

* add config/webpack and storyboard

* add streaming/

* yarn test:lint -- --fix

app/javascript/mastodon/features/status/containers/card_container.js

@@ -2,7 +2,7 @@ import { connect } from 'react-redux';
 import Card from '../components/card';
 
 const mapStateToProps = (state, { statusId }) => ({
-  card: state.getIn(['cards', statusId], null)
+  card: state.getIn(['cards', statusId], null),
 });
 
 export default connect(mapStateToProps)(Card);