[views] use icons for user menu and login (header) (closes #3803684) - use icons from the embedded pictograms font for: - authenticated user menu (userActionsBox) - login (CookieLoginComponent) - do not display "anonymous" when not logged in

missing-dep-for-interpreter make => make | build-essential | dpkg-dev (usr/share/pyshared/cubicweb/skeleton/debian/rules.tmpl)