Use time.process_time() instead of deprecated clock()
This fixes:
DeprecationWarning: time.clock has been deprecated in Python 3.3 and
will be removed from Python 3.8: use time.perf_counter or
time.process_time instead
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