openzim

Having the following list of articles:

$ cat articles 
/dev/zero
Device_file

Scraping it:

mw --mwUrl="https://en.wikipedia.org" --articleList=articles

We remark the the welcome page list miss the article "Research Unix"... but the article is in the ZIM.

The reason is the space beetween "Research" and "Unix".

What happens is that Wikipedia Mediawiki is configured

The linux builder on the CI always try to checkout a branch.
But when we push a tag, the CI try to build the tag and there is no corresponding branch with the tag name.

It would be better to detect if we are building a tag or a branch and checkout the right git ref.
Failing of the CI here is not important as nothing is done with this CI (just building), and when tag is pushed with the a branc

Currently it seems to be a - character like at http://library.kiwix.org/khan-academy-videos_en_geometric-optics-ap-physics-2-khan-academy_2021-04/M/Description

In order to update ZIM files to the new tagging system, please make sure your scraper:

• is using the lastest zimwriterfs (1.3.5+ or :latest docker image). It supports new options and fixes important metadata (tags, favicon) and LZMA compression level.
• is including a _category:xxx tag (See [kiwix-tools#317](https://github.com/kiwix/kiwix-tools/issu