Xapo article fixups

Author: jnewbery

_posts/en/2018-07-30-xapo-consolidation.md

@@ -3,11 +3,12 @@ title: 'Field Report: Consolidation of 4 Million UTXOs at Xapo'
 permalink: /en/xapo-utxo-consolidation
 name: 2018-07-30-xapo-utxo-consolidation
 type: posts
-layout: page
+layout: post
 lang: en
 version: 1
 ---
-{:.center}
+
+{:.post-meta}
 *by [Anthony Towns](https://twitter.com/ajtowns)<br>Developer on Bitcoin Core
 at [Xapo][]*