Rename themes -> flavours ? ?

app/javascript/flavours/glitch/components/permalink.js

@@ -0,0 +1,34 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+export default class Permalink extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    className: PropTypes.string,
+    href: PropTypes.string.isRequired,
+    to: PropTypes.string.isRequired,
+    children: PropTypes.node,
+  };
+
+  handleClick = (e) => {
+    if (this.context.router && e.button === 0 && !(e.ctrlKey || e.metaKey)) {
+      e.preventDefault();
+      this.context.router.history.push(this.props.to);
+    }
+  }
+
+  render () {
+    const { href, children, className, ...other } = this.props;
+
+    return (
+      <a target='_blank' href={href} onClick={this.handleClick} {...other} className={`permalink${className ? ' ' + className : ''}`}>
+        {children}
+      </a>
+    );
+  }
+
+}