[debian] Update description of cubicweb-ctl* packages
init scripts are no longer shipped.
Avoid mentionning "start" and "stop" command which should not be used in
production environments.
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