[connection] set language on new Connection for the internal manager For regular users this is handled by _set_user, but for internal connections (e.g. used for notifications) we need something else.

../../doc/book usr/share/doc/cubicweb-documentation
../../doc/html usr/share/doc/cubicweb-documentation
../../debian/cubicweb-doc usr/share/doc-base/cubicweb-doc