[server/utils] update passlib API to 1.7 (closes #17054805) while keeping bw-compat with 1.6 - 2.7 is not available for all distributions, e.g. jessie. The dependancy has been bumped in 6186cd15a46d because of a change in bc9d901cb9e6. We may easily use the appropriate method depending on the version installed.

missing-dep-for-interpreter make => make | build-essential | dpkg-dev (usr/*/cubicweb/skeleton/debian/rules)
embedded-javascript-library usr/share/cubicweb/cubes/shared/data/jquery.js