[dataimport] separate entities table from other metadata in SQLGenObjectStore 'entities' needs to be updated first as every other table has references to its rows. Remove use of thread-local storage in the process. related to #9177565.

usr/bin/cubicweb-ctl usr/bin/
usr/lib/python2*/*-packages/cubicweb/cwctl.py
../cubicweb-ctl.bash_completion etc/bash_completion.d/cubicweb-ctl