[notification] move notification view in ``sobject.notification``
It has no user outside this module. This enforce serversideness of
notification and allow future cleanup.
No backward compat is set up to prevent circular import. The class has no other user
anyway.
(closes 2845144)
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