shortcut.js: Don't launch shortcut if Ctrl or Alt is pressed
See #2383 (closed). This launched some shortcuts while using some web browser features.
[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
See #2383 (closed). This launched some shortcuts while using some web browser features.