Merge branch 'master' into group-stats

.gitignore

.gitlab-ci.yml

.gitmodules

CHANGELOG.rst

CONTRIBUTING.rst

README.rst

aleksis/core/__init__.py

aleksis/core/admin.py

aleksis/core/apps.py

aleksis/core/celery.py

aleksis/core/checks.py

aleksis/core/decorators.py

aleksis/core/filters.py

aleksis/core/forms.py

aleksis/core/locale/ar/LC_MESSAGES/django.po

aleksis/core/locale/ar/LC_MESSAGES/djangojs.po

aleksis/core/locale/de_DE/LC_MESSAGES/django.po

aleksis/core/locale/de_DE/LC_MESSAGES/djangojs.po

aleksis/core/locale/fr/LC_MESSAGES/django.po

aleksis/core/locale/fr/LC_MESSAGES/djangojs.po