consistently use "Durchführung" instead of "Ausführung" in german translation

See merge request !2261

Translations

See merge request !2259

extend CHANGES

See merge request !2260

update dependencies

See merge request !2258

https://github.com/fullcalendar/fullcalendar/blob/master/CHANGELOG.md#v5102-2022-02-09
https://github.com/stefanfoulis/django-phonenumber-field/releases/tag/6.1.0

Consent tweaks

See merge request !2256

looks less like the date belongs to the document

update CHANGES.md

See merge request !2255

Some accessibility improvements

See merge request !2254

> The content of a <main> element should be unique to the document.
> Content that is repeated across a set of documents or document sections
> such as sidebars, navigation links, copyright information, site logos,
> and search forms shouldn't be included unless the search form is the
> main function of the page.

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/main#usage_notes

add identicons for subjects everywhere

See merge request !2249

Badge tooltips

See merge request !2252