Improve design for navigation menu. Add languages sticky to bottom.

package.json

src/app/core/components/main/main.component.scss

...p/core/components/main/side-menu/side-menu.component.html

...p/core/components/main/side-menu/side-menu.component.scss

...app/core/components/main/side-menu/side-menu.component.ts

...ents/results/result-dataset/result-dataset.component.html

...components/results/result-post/result-post.component.html

...lts/results-tab-scope/results-tab-scope.component.spec.ts

src/assets/img/acteurs.svg

src/assets/img/demarche.svg

src/assets/img/documentation.svg

src/assets/img/home.svg

src/assets/img/recherche.svg

src/i18n/messages.en.xlf

src/i18n/messages.fr.xlf

src/scss/variables.scss