hotfix/OSIS-4266 show better tree when footer on page without scroll
hotfix/OSIS-4266 show better tree when footer on page without scroll

uclouvain/osis,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/OSIS-Louvain