Since Bootstrap 4, ClipboardJS does not copy the value in the clipboard anymore
as Bootstraps modals give the focus to another element. As the focus need to be
given back to the correct element, ClipboardJS has to be updated as the
container parameter is only added in v1.7. We were in 1.5.
That container parameter allow to give the focus back to the correct element.
See doc on https://clipboardjs.com/
+ Issue : https://github.com/zenorocha/clipboard.js/issues/155
* Do not assault the user with a full traceback on bug, but indicates
an error occured and allow him to toggle the traceback
* Automatically scroll the traceback to the end (better for python
errors)
* Propose the user to report the traceback by using a new "Copy"
button which correctly copies the full error + traceback
David Beguin