Adding Latest post and most popular tags to the sidebar

[tatsushid]

Here is the example of the tag list.

<ul>
  {{ range first 10 .Site.Taxonomies.tags.ByCount }}
    <li><a href="/tags/{{ .Name | urlize }}">{{ .Name }}</a> ({{ .Count }})</li>
  {{ end }}
</ul>

On my environment, it works