Missing common proprietary Arabic fonts make some PDF documents unreadable

Reported by a user, Tails, but in fact many Linux OS are missing some Arabic fonts, making unreadable documents like pdfs (e.g. http://175.45.176.67/ar/book/download.php?4+4002).

While it looks like it’s un upstream issue, I feel like it wouldn’t be enough to just ask upstream to fix it, when it might be a more sensitive issue for Tails.

Then we have basically two options I can think of:

adding those fonts to Tails
telling people they have to use .dotfiles feature.

Related issues

Related to #9956 (closed)
Related to #15807 (closed)

Original created by @mercedes508 on 13473 (Redmine)

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