Champs de contacts et réseaux sociaux : uniformisation (#805)

assets/sass/_theme/blocks/contact.sass

assets/sass/_theme/design-system/contacts.sass

assets/sass/_theme/design-system/hero.sass

assets/sass/_theme/design-system/transcription.sass

assets/sass/_theme/sections/locations.sass

assets/sass/_theme/sections/persons.sass

layouts/locations/term.html

layouts/partials/blocks/templates/contact.html

layouts/partials/blocks/templates/organizations.html

layouts/partials/blocks/templates/organizations/map.html

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

layouts/partials/commons/address.html

layouts/partials/commons/contact-details.html

layouts/partials/commons/socials.html

layouts/partials/footer/js.html

layouts/partials/footer/site.html

layouts/partials/footer/social.html

layouts/partials/locations/location.html

layouts/partials/locations/map.html