{% assign topnav = site.data[page.topnav] %}
{% assign topnav_dropdowns = site.data[page.topnav].topnav_dropdowns %}
{% for folder in topnav.topnav[page.lang] %}
{% comment %}
Notice:
Liquid engine is very poor in working with boolean logic.
Also, somehow, it can not check equality of folder.url == '/' and page.url=='/' - something buggy here.
That's why below lines of li class are such ugly.
{% endcomment %}
{% if folder.title == 'Документация' or folder.title == 'Documentation' %}
{{ folder.title }}
{% else %}
{{ folder.title }}
{% endif %}
{% if folder.folderitems %}
{% for folderitem in folder.folderitems %}
{% if folderitem.external_url %}