Accessibilité des blocs (#500)

assets/sass/_theme/blocks/pages.sass

config.yaml

i18n/en.yml

i18n/fr.yml

layouts/partials/blocks/templates/links.html

layouts/partials/blocks/templates/pages/alternate.html

layouts/partials/blocks/templates/posts/highlight.html

layouts/partials/blocks/templates/posts/large.html

layouts/partials/blocks/templates/projects/large.html

layouts/partials/commons/categories.html

layouts/partials/events/categories.html

layouts/partials/events/event-infos.html

layouts/partials/posts/categories.html

layouts/partials/posts/post-infos.html

layouts/partials/posts/post.html

layouts/partials/projects/categories.html

layouts/partials/projects/project-infos.html

layouts/partials/projects/project.html