[application] call req.set_session in application.main_handle_request
The Session handling chain is no more responsible for calling req.set_session.
It just returns a valid session and lets the caller link it to the Request.
This opens the way to explicitly creating and closing a connection/transaction
in ``application.main_handle_request``.
Related to #2503918
#! /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