- automatic last_modified_at
    - automatic next-prev buttons
    - also add club de science

    test with ccl/snippets/devenir-benevole.md included
    in ccl/adherer.md and ccl.md

    - logo cult-ure plus gros
    - indien comme auteur au lieu de remi
    - logos tweaks
    - com & sea
    - agenda simple via google cal du puget

    - 404
    - add pages