This field was meant to covere two aspects:

1.  Remind users to check exclusion criteria.
2.  Document that exclusion criteria have already been checked in an
    earlier call/mail.

(1) is not really that relevant because recruiters usually know the
criteria by heart after a few calls. It is nice to have the text
available, but it is usually not necessary for each participant.

(2) also has limited utility. For phone recruitment, everything is
usually checked in a single call. For mail recruitment there are usually
more than one mail, but those have a relatively clear structure.

update-deps: django-mfa3 security release

See merge request !1950

changelog pseudonyms subject export

See merge request !1948

I18n

See merge request !1947

pseudonyms in subject export

See merge request !1946

changelog for 0.62.0

See merge request !1943

update django-mfa3 to get translations

See merge request !1945

I18n

See merge request !1944

show reminder period in session form

Closes #123

See merge request !1929

two factor authentication (using django-mfa3)

See merge request !1934

to avoid having to build it

change "attribute" to "recruitment attribute" in UI

See merge request !1941

update dependencies

See merge request !1942

https://www.djangoproject.com/weblog/2021/jul/01/security-releases/
https://github.com/fullcalendar/fullcalendar/blob/master/CHANGELOG.md#v580-2021-06-15