v0.19 add icons

assets/css/style.scss

assets/img/clipboard.svg

assets/img/favori_add.png

assets/img/favori_remove.png

components/badge/Danger.vue

components/btn/Clipboard.vue

components/btn/Pagination.vue

components/btn/Search.vue

components/btn/Sort.vue

components/certif/List.vue

components/member/Card.vue

components/member/List.vue

components/navigation/menu/Sidebar.vue

layouts/default.vue

nuxt.config.js

package.json

pages/favoris.vue

pages/lexique.vue

pages/membres/index.vue