[Glitch] Fix dimensions of preview cards, fix crash in web UI, fix warning

Port 9c38c5daa3 to glitch-soc

app/javascript/flavours/glitch/features/status/containers/card_container.js

@@ -1,8 +0,0 @@
-import { connect } from 'react-redux';
-import Card from '../components/card';
-
-const mapStateToProps = (state, { statusId }) => ({
-  card: state.getIn(['statuses', statusId, 'card'], null),
-});
-
-export default connect(mapStateToProps)(Card);