Nested Menu for all pages on the website:
<ul>
{% for page in site.pages %}
<li>
<a href="{{page.url}}"{% if page.url == url %} class="is-current-page"{% endif %}>{{page.title}}</a>
{% if page.pages.size > 0 %}
<ul>
{% for subpage in page.pages %}
<li>
<a href="{{subpage.url}}"{% if subpage.url == url %} class="is-current-page"{% endif %}>{{subpage.title}}</a>
</li>
{% endfor %}
</ul>
{% endif %}
</li>
{% endfor %}
</ul>
Sort and loop through tags:
{% assign sorted_tags = site.pages['blog'].taxonomy['tags'].values | sort:'value' %}
<ul>
{% for tag in sorted_tags %}
<li><a href="{{tag.url}}">{{tag.value}}</a></li>
{% endfor %}
</ul>
<head>
{% if meta.redirect %}
<meta http-equiv="refresh" content="0;url={{meta.redirect}}">
{% endif %}
</head>