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/compose/containers/navigation_container.js

@@ -3,7 +3,7 @@ import NavigationBar from '../components/navigation_bar';
 
 const mapStateToProps = (state, props) => {
   return {
-    account: state.getIn(['accounts', state.getIn(['meta', 'me'])])
+    account: state.getIn(['accounts', state.getIn(['meta', 'me'])]),
   };
 };