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/search_results_container.js

@@ -2,7 +2,7 @@ import { connect } from 'react-redux';
 import SearchResults from '../components/search_results';
 
 const mapStateToProps = state => ({
-  results: state.getIn(['search', 'results'])
+  results: state.getIn(['search', 'results']),
 });
 
 export default connect(mapStateToProps)(SearchResults);