[dataimport] massive renaming of session to cnx
and make NoHookObjectStore working with the new connection handling.
Closes #4891547
#! /bin/sh -e#if [ "$1" = configure ]; then if which install-docs >/dev/null 2>&1; then install-docs -i /usr/share/doc-base/cubicweb-doc fifi#DEBHELPER#exit 0