Rename 'Tag' to 'Flag' - which is more accurate

js/components/Flag.js

@@ -0,0 +1,15 @@
+import React from 'react';
+
+export default function Flag({ item, short = false }) {
+  if (item.flag !== 'default') {
+    let name = item.flag.toUpperCase();
+    if (short === true) {
+      name = {
+        new: 'N',
+        changed: 'C',
+      }[item.flag];
+    }
+    return <span className={`flag flag--${item.flag}`}>{name}</span>;
+  }
+  return null;
+}