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.
addressbook
basket
blog
book
calendar
comment
company
email
file
folder
i18ncontent
keyword
link
mailinglist
person
tag
timeseries
vcsfile