Ajustement des images (#893)

assets/sass/_theme/blocks/call_to_action.sass

assets/sass/_theme/blocks/chapter.sass

assets/sass/_theme/blocks/features.sass

assets/sass/_theme/blocks/gallery.sass

assets/sass/_theme/blocks/image.sass

assets/sass/_theme/blocks/key_figures.sass

assets/sass/_theme/blocks/links.sass

assets/sass/_theme/blocks/testimonials.sass

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

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

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

assets/sass/_theme/sections/events.sass

assets/sass/_theme/sections/locations.sass

assets/sass/_theme/sections/organizations.sass

assets/sass/_theme/sections/pages.sass

assets/sass/_theme/sections/programs.sass

assets/sass/_theme/utils/shame.sass

layouts/partials/commons/image-figure.html

layouts/partials/programs/image.html