When an attendee's registration was archived, their seat was still
considered taken, which could be problematic such as in cases of
limited seat availability.
Only non-archived registrations are now counted as seats. The same
error as with regular registrations will be raised if there are not
enough seats available to un-archive a registration. These ValidationError
messages now show the name of the fully booked event.
A few python tests are included to verify the impact of (un)archiving on
seats availability for events and for event tickets.
The appearence of archived registrations was also not different in form
and kanban views, which is somewhat confusing and inconsistent with the
aspect of archived records in Odoo. Actions buttons are not available on
archived records.
Filtering in the archived records needed to be simplified from a "Custom
Filter" to a one-click feature, already available for many models.
Task-2646298
closesodoo/odoo#77715
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>
Florian Charlier
9540dc7772