Alias ugettext to gettext method of cwGNUTranslations in Python 3 The former does not exist in Python 3, but we rely on it. This fixes test_login_bad_password in cubicweb/pyramid/test/test_login.py which has never passed since being introduced in 6392f34fcdad.

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