[connection] eliminate ClientConnection leftovers
* in the documentation
* in the docstrings
* in code notations (e.g. clt_cnx -> cnx)
Related to #3837233.
From now, there should be just one ClientConnection left in repoapi.py.
#! /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
fi
fi
#DEBHELPER#
exit 0