doc/user.md: supported browsers, legacy browsers
Discussed with @mikael-s @duez @flothoni in an audio meeting.
see #1077 (closed)
[A venir] Mise en place de quotas sur nos instances GitLab. Plus d'information sur : https://doc-si.inria.fr/pages/viewpage.action?pageId=129728565
[Coming soon] Quotas installation on our GitLab instances. More information: https://doc-si.inria.fr/pages/viewpage.action?pageId=129728565
Discussed with @mikael-s @duez @flothoni in an audio meeting.
see #1077 (closed)