[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.
Document: cubicweb-doc
Title: CubicWeb documentation
Author: Logilab
Abstract: Some base documentation for CubicWeb users and developpers
Section: Apps/Programming
Format: HTML
Index: /usr/share/doc/cubicweb-documentation/index.html
Files: /usr/share/doc/cubicweb-documentation/*.html