Update for new Hugo versions

Signed-off-by: Danila Fedorin <danila.fedorin@gmail.com>

layouts/list.html

@@ -0,0 +1,10 @@
+{{ define "main" }}
+<h2>{{ .Title }}</h2>
+{{ .Content }}
+
+<ul class="post-list">
+    {{ range .Pages.ByDate.Reverse }}
+    {{ partial "post.html" (dict "page" .) }}
+    {{ end }}
+</ul>
+{{ end }}