Additional card cleanup

src/components/presentational/CardSource.js

@@ -0,0 +1,16 @@
+import React from 'react';
+
+import copy from '../../js/data/copy.json';
+
+const CardSource = ({ source, language }) => {
+  const source_lang = copy[language].cardstack.source;
+
+  return (
+    <div className="event-card-section source">
+      <h4>{source_lang}</h4>
+      <p>{source}</p>
+    </div>
+  );
+}
+
+export default CardSource;