[Improvement] Add visual queue to blocks that have a lang attribute set on the Document overview

[webdados]

As stated on the title. Maybe the language icon:

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24" aria-hidden="true" focusable="false"><path d="M17.5 10h-1.7l-3.7 10.5h1.7l.9-2.6h3.9l.9 2.6h1.7L17.5 10zm-2.2 6.3 1.4-4 1.4 4h-2.8zm-4.8-3.8c1.6-1.8 2.9-3.6 3.7-5.7H16V5.2h-5.8V3H8.8v2.2H3v1.5h9.6c-.7 1.6-1.8 3.1-3.1 4.6C8.6 10.2 7.8 9 7.2 8H5.6c.6 1.4 1.7 2.9 2.9 4.4l-2.4 2.4c-.3.4-.7.8-1.1 1.2l1 1 1.2-1.2c.8-.8 1.6-1.5 2.3-2.3.8.9 1.7 1.7 2.5 2.5l.6-1.5c-.7-.6-1.4-1.3-2.1-2z"></path></svg>