fix: 318 admin structure tree click in tree item cause invalid redirection

https://issues.unige.ch/browse/AOU-318

added 5 commits

• 7377c9ca...5062fb66 - 3 commits from branch master
• dd2f1e39 - fix: 318 admin structure tree click in tree item cause invalid redirection
• 70c3d952 - fix: reduct clickable zone on tree to match with highlighted part

Compare with previous version

merged