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.
Adrien Di Mascio <Adrien.DiMascio@logilab.fr> [Wed, 16 Nov 2016 14:38:11 +0100] rev 11822
[devctl] make i18n custom message extractors work with legacy layouts
distname needs to be "cubicweb_<cubename>", even with legacy layouts
for pkg.load_entry_point() to work
closes #16272177