Add topic modal

client/js/components/modals/Topic.js

@@ -0,0 +1,19 @@
+import React from 'react';
+import withModal from 'components/modals/withModal';
+import { linkify } from 'utils';
+
+const Topic = ({ payload: { topic, channel }, onClose }) => {
+  return (
+    <>
+      <div className="modal-header">
+        <h2>Topic in {channel}</h2>
+        <i className="icon-cancel modal-close" onClick={onClose} />
+      </div>
+      <p className="modal-content">{linkify(topic)}</p>
+    </>
+  );
+};
+
+export default withModal({
+  name: 'topic'
+})(Topic);