Updated all basic components

removed unnecessary components, combined where necessary
added each component to a folder, added individual css style modules
optimized some component rendering flows
removed functional components in favor of pure components
linted and formatted all of the files

app/javascript/gabsocial/components/icon/index.js

@@ -0,0 +1,23 @@
+import classNames from 'classnames';
+
+export default class Icon extends PureComponent {
+
+  static propTypes = {
+    id: PropTypes.string.isRequired,
+    className: PropTypes.string,
+    fixedWidth: PropTypes.bool,
+  };
+
+  render () {
+    const { id, className, fixedWidth, ...other } = this.props;
+
+    const classes = classNames('fa', `fa-${id}`, className, {
+      'fa-fw': fixedWidth,
+    });
+
+    return (
+      <i role='img' alt={id} className={classes} {...other} />
+    );
+  }
+
+}