Added a timeline for Direct statuses

* Lists all Direct statuses you've sent and received
* Displayed in Getting Started
* Streaming server support for direct TL

app/javascript/mastodon/features/direct_timeline/containers/column_settings_container.js

@@ -0,0 +1,17 @@
+import { connect } from 'react-redux';
+import ColumnSettings from '../../community_timeline/components/column_settings';
+import { changeSetting } from '../../../actions/settings';
+
+const mapStateToProps = state => ({
+  settings: state.getIn(['settings', 'direct']),
+});
+
+const mapDispatchToProps = dispatch => ({
+
+  onChange (key, checked) {
+    dispatch(changeSetting(['direct', ...key], checked));
+  },
+
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(ColumnSettings);