[dataimport] massive_store: do not drop constraints with `cascade` since it breaks things
We want to be able to restore constraints at the end of the import. If
they are silently dropped due to a CASCADE, we can't do that.
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