Flake8 cubicweb/cwctl.py
* run autopep8 on the file
* fixed unused imports
* rename "version" import as "cw_version" in order not to shadow local
variables
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