Move sculpin-old files to sculpin-old directory

sculpin-old/source/_layouts/post.html.twig

@@ -0,0 +1,26 @@
+{% extends 'default' %}
+
+{% block page_title_wrapper %}{% endblock %}
+
+{% block metas %}
+    {{ parent() }}
+    <meta name="og:description" content="{{ page.excerpt }}">
+    <meta name="twitter:description" content="{{ page.excerpt }}">
+{% endblock %}
+
+{% block content_wrapper %}
+    {% include 'post/header' %}
+    {% include 'post/intro-image' %}
+
+    <div class="markup post mb-6">
+        {% include 'post/old-post-message' %}
+        {% block content %}{% endblock %}
+    </div>
+
+    <div class="mb-6">
+        {% include 'post/questions-comments' %}
+        {% include 'post/tags' %}
+    </div>
+
+    {% include 'post/about-author' %}
+{% endblock %}