instead of building HTML in python, it's cleaner and prevent problems when attachments names are HTML entities.

because storing as document depends on erp5_ingestion & erp5_dms

So that conversion is done by a zope activity node and not on a front
node.

/reviewed-on https://lab.nexedi.com/nexedi/erp5-capago/merge_requests/27

/reviewed-on https://lab.nexedi.com/nexedi/erp5-capago/merge_requests/26

backport nexedi/erp5!694

/reviewed-on https://lab.nexedi.com/nexedi/erp5-capago/merge_requests/25

See 4bb5d32e

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
```

backport nexedi/erp5!680

/reviewed-on https://lab.nexedi.com/nexedi/erp5-capago/merge_requests/24

Because at the moment we don't have SFTP integrated in ERP5 or testnode,
this test will only work if the URL of a running SFTP is set through
testSFTPConnection_SFTP_URL environment variable.

This allows sorting the list of filenames, by size ( sort_on="st_size" ),
by modification date ( sort_on="st_mdate" )

backport nexedi/erp5!666

/reviewed-on https://lab.nexedi.com/nexedi/erp5-capago/merge_requests/23

All top level documents are not supposed to acquire local roles
https://www.erp5.com/erp5-Guideline.Unset.Acquire.Local.Roles.On.Document.Portal.Type.Configuration.If.Applicable

I believe this comes from the time where we were using images as
sub-documents of products or persons. We now use embedded files for
these cases, so no need to have an exception here.

backport nexedi/erp5!634

This is only a partial backport, we don't have Romain's gadget in this branch

/reviewed-on https://lab.nexedi.com/nexedi/erp5-capago/merge_requests/22

https://codemirror.net/demo/matchtags.html

makes editions of web pages and xml easier

Backport nexedi/erp5!631

/reviewed-on https://lab.nexedi.com/nexedi/erp5-capago/merge_requests/21

group_calendar_interaction_workflow introduce interaction on calendar
exception, we should take into account that these calendar exception
also exists in leave request and presence request.

Also rename the test to be more specific and remove useless
organisation.

The interaction should also be triggered if a Calendar Exception is changed.

Revert "erp5_calendar: Improve workflow interaction to update calendar if any sub-object is changed"

This reverts commit c49a7911.

revert just to apply
nexedi/erp5!631 easily

backport nexedi/erp5!630

There was conflicts, because we have already backported
nexedi/erp5!137/

/reviewed-on https://lab.nexedi.com/nexedi/erp5-capago/merge_requests/19

TODO:

 * [ ] file as bug
 * [ ] unify implementation with Base_getAccountingPeriodStartDateForSectionCategory
 * [ ] MR for nexedi/erp5
 * [ ] capago: stop creating accounting period for durban in `ERP5Site_openCapagoAccountingPeriod`, this was just hiding the bug

/reviewed-on https://lab.nexedi.com/nexedi/erp5-capago/merge_requests/20