Moved most of the sidebar into a CommonLinks panel

src/components/panels/common_links.jsx

@@ -0,0 +1,37 @@
+import React from 'react';
+import { withRouter, Link } from 'react-router-dom';
+
+import Logout from './logout.jsx';
+
+class CommonLinks extends React.Component {
+	constructor(props) {
+		super(props);
+		this.state = {
+			//
+		}
+	}
+
+	render() {
+		let Extra;
+
+		if (this.props.extra) {
+			Extra = this.props.extra;
+		} else {
+			Extra = () => null;
+		}
+
+		return (
+			<div className='panel'>
+				<p>Return <Link to='/' onClick={this.props.onClickHome}>home</Link></p>
+				<p>Go to <Link to='/profile' onClick={this.props.onClickProfile}>your profile</Link></p>
+				<p>Go to <Link to='/ladder' onClick={this.props.onClickLadder}>the game ladder</Link></p>
+
+				<Extra />
+
+				<Logout onClick={() => this.props.history.push('/')} />
+			</div>
+		);
+	}
+}
+
+export default withRouter(CommonLinks);