footer: fix missing version

[Garfield-fr]

Co-Authored-by: Bertrand Zuchuat [email protected]

Code review check list

• Commit message template compliance.
• Commit message without typos.
• File names.
• Functions names.
• Functions docstrings.
• Unnecessary commited files?
• Cypress tests successful?

[zannkukai]

I don't understand why the version wasn't print into footer.
version was a context argument for frontpage.html --> extending page.html --> including footer.html.

[Garfield-fr]

I don't understand why the version wasn't print into footer.
version was a context argument for frontpage.html --> extending page.html --> including footer.html.

In the current version there is an error. The version number is displayed only on the home page, because the parameter must be passed to each template. With the "Global" version, it is no longer necessary to pass this parameter, because it is accessible through a global variable of jinja.