[config] Avoid relying on shared_dir method when possible
From 3.26, some "data" directories (like web/data and i18n or wdoc) are
installed along with CubicWeb in site packages. So we can retrieve them
relatively to the module that needs them (namely "cubicweb" for "i18n"
and "cubicweb.web" for "web/data" and "wdoc"). Reason for doing this is
that "share_dir()" is not working when cubicweb is installed in
"develop" mode and we are about to drop this method.
Related to #17132990.
# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.