Amélioration des informations de contact (#2306)

* nice tests

* alpha

* clean

* clean

* school

* Update app/services/contact_details.rb

Co-authored-by: Sébastien Gaya <sebastien.gaya@gmail.com>

* Update app/helpers/application_helper.rb

Co-authored-by: Sébastien Gaya <sebastien.gaya@gmail.com>

* name

* Update app/views/admin/communication/blocks/templates/contact/_static.html.erb

Co-authored-by: Sébastien Gaya <sebastien.gaya@gmail.com>

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Co-authored-by: Sébastien Gaya <sebastien.gaya@gmail.com>