New components, convert hooks to components, bug fixes.

components/Icon.js

@@ -0,0 +1,7 @@
+import React from 'react';
+import classNames from 'classnames';
+import styles from './Icon.module.css';
+
+export default function Icon({ icon, className }) {
+  return <div className={classNames(styles.icon, className)}>{icon}</div>;
+}