bulma: use Font-Awesome instead of Fontello + start of major redesign: - Font-Awesome is now used instead of Fontello, following change in Libervia Media. - This is a beginning of a major redesign of the web templates/web frontend. This currently breaks a lot of thing.

@media (min-width: 500px) {
    #main_area {
        background-image: var(--bg-img);
        background-repeat: no-repeat;
        background-size: cover;
    }
}