Save detailed information for Celery tasks

(cherry picked from commit f1506059)

CHANGELOG.rst

@@ -30,6 +30,7 @@ Fixed
   and images were displayed only partially.
 * Invite Person view threw an error when personal invites existed
 * Personal invites did not work
+* Detailed information for done Celery tasks weren't saved.
 
 `2.11.1`_ - 2022-08-31
 ----------------------

aleksis/core/settings.py

@@ -766,6 +766,7 @@ CELERY_BROKER_URL = _settings.get("celery.broker", REDIS_URL)
 CELERY_RESULT_BACKEND = "django-db"
 CELERY_CACHE_BACKEND = "django-cache"
 CELERY_BEAT_SCHEDULER = "django_celery_beat.schedulers:DatabaseScheduler"
+CELERY_RESULT_EXTENDED = True
 
 if _settings.get("celery.email", False):
     EMAIL_BACKEND = "djcelery_email.backends.CeleryEmailBackend"