switch to vanillajs-datepicker

See merge request !1726

Align guardian search template with subject search

See merge request !1728

to get rid of jquery

update python dependencies

See merge request !1727

update npm dependencies

See merge request !1725

fix blocked in Contact.is_reachable

See merge request !1722

consistent date of birth in  create_demo_content

See merge request !1721

mention test mail in changelog

See merge request !1720

Refactor HTML

See merge request !1718

avoid negative margins

See merge request !1716

refine multi-guardian wording

See merge request !1712

relevant changelogs:

-   https://github.com/geopy/geopy/releases/tag/2.1.0

It seems like we have missed a few releases.

Relevant changelogs:

-   https://blog.getbootstrap.com/2021/01/19/bootstrap-4.6.0/
-   https://github.com/fullcalendar/fullcalendar/blob/master/CHANGELOG.md
    -   icalendar support could be interesting
-   https://github.com/dmester/jdenticon/releases
-   https://eslint.org/blog/2020/02/whats-coming-in-eslint-7.0.0

rm JSONField model_bakery compat

See merge request !1723

fix empty email link

See merge request !1717

fixed in model_bakery 1.2.0

https://github.com/model-bakers/model_bakery/blob/main/CHANGELOG.md#added-2

-   not available in bootstrap5
-   hacky in the first place

set image dimensions in HTML

See merge request !1715

this allows the browser to do currect layout before the images have
loaded.

The exact numbers are not relevant, only the aspect ratio.

exclude blocked subjects from data protection dashboard

See merge request !1713

integrate requirements-dev.txt into setup.cfg

See merge request !1710

indicate other subjects under guardianship

See merge request !1709

fix off-by-one error in date-of-birth statistics

See merge request !1711

List styling

See merge request !1706