The query now searches in more fields. For example, when getting a
list of tags, the query is applied to the tag name *and* category.
When listing persons, the query now also looks in the associated
organization name.
This has been used to make some headers in the meta data tables
clickable to sort the list accordingly.
Refs: #965, #538
The upload request can now contain a boolean for importing only
attachments when e-mails are uploaded. This option is now also added
to a source url.
Refs: #983
In order to keep deleted items for a while, the periodic task can now
use a duration to only remove items with a certain age. This can be
used to ensure that a deleted item stays at least X days before it
will be removed from the database.
Refs: #347
It's not very likely to have more modes of search besides normal and
trashed, but got surprised in that way quite often and it's nicer this
way anyways.
A new query/request parameter can be used to apply a search to only
soft-deleted items.
The query expression `Trashed` has been introduced which selects only
items with state `Deleted`. This is another option an analog to
`ValidItemStates` (both cannot be used together as they would select
no items). This new query node is not added to the parser, because
users may not use it in their own queries - it must be part of the
"fixed" query so the application can control in which subset to search
(it would otherwise be possible to select any items).
When deleting items via the http api, they are not deleted anymore but
a new status "Deleted" is set. The collective insights contains now a
count separately for deleted items.
When an item is deleted in detail view, the results must be updated to
reflect the new state. The results are now changed by removing the
corresponding item.
Fixes: #920
The tag category is a bit special (sadly). The options are retrieved
by going through the tags. It must not update these, if a query
selects only a subset of tags.
