remove the calendar base category on Assignment portal type because the relation between Assignment and Group Calendar is obsolete

Add Group Calendar Assignment portal type. It will be used to set the relation with the source and the period

also make redirection stay on website

erp5_ingestion: Improve publication_section field in Base_viewNewFileDialog to be possible pass a default value to the field

The category uid should be passed to the query. With this, is possible generate queries like stock.project_uid is NULL.

This script is intended to replace Base_getCurrencyForSection and support
properly the case where there are more than one currency.
Start using it in accounting module view and grouping reference dialog.

Contributed by Jingjing XU.

Revert "TemplateTool: keep_bt5_id_set can't be None because the is expecting one set or list at least."

This reverts commit b72cc56a.

because it overrides WebPage_viewAsWeb.

Also, expose and document unicity score divisor.

This fixes many different bugs, like random Unauthorized errors when a
knowledge pad is deleted.

When an object is created, calling immediateReindexObject is only a performance
coding crime, which should be negligible since pads are objects that are not
created often. Previous implementation was certainly even less scalable due to
the many extra requests done to wait that new pads are indexed.

If immediateReindexObject is too slow, a distributed cache could be used
instead. This is not trivial and overkill for the moment.

It would be better if we didn't have to rely on the catalog. IOW, data could
have been organized differently so that in ZODB, pads are grouped in containers,
1 per user.

(cherry picked from commit 23da3f0d)