Do not rely on DateTime.strftime which does fails on dates <= 1900.
This simple case does not need all the features of strftime and can be
implemented inline.

It currently fails with such ValueError:
```
year=101 is before 1900; the datetime strftime() methods require year >= 1900
```

Some dialog expect to get the line uid list, even if no cell was directly editable.

Use the same dialog pattern than the mass transition dialog.
Display all documents by using the current query + deletable workflow state.

Use the listbox_uid to get the effective list of document to delete.

This partially revert nexedi/erp5@490af3ba

/reviewed-on nexedi/erp5!688

Add the portal type "DSN Disenrollment Record" for this

Used to record details about the end of a contract to report in social declarations.

/reviewed-on !692

Some come was introduced to check status of test suite before creating a test result. This
introduced a regression in the case of cloud performance test. The code was covered by
unit test, but not in that particular case.

Separate css files for embedding during wkhtmltopdf pdf-conversion. only use ttf format to reduce payload.

/reviewed-on !690

Use the ERP5 router.
Allow pagination from one contact to another.
Allow to search a contact.

Stop using data url for images.

Update to Strophe 1.2.15

Experiment CSS customizations.
Show that it's possible to surcharge default CSS.

Create a dialog gadget used by most pages.

Use a grid of module's group to simplify navigation.

Only use hardcoded limit when rendering a listbox.

Always try to fetch the first 1000 documents in such case, and split the sql result in python.
This means that it is not possible to paginate to the 1001th document.