Merge branch 'oauth-refresh' into 'master'

.gitlab-ci.yml

arkindex/dataimport/providers.py

arkindex/dataimport/tests/test_gitlab_provider.py

arkindex/dataimport/tests/test_providers.py

arkindex/documents/fixtures/data.json

arkindex/documents/management/commands/build_fixtures.py

arkindex/project/config.py

arkindex/project/tests/config_samples/defaults.yaml

arkindex/project/tests/test_config.py

arkindex/users/admin.py

arkindex/users/api.py

arkindex/users/models.py

arkindex/users/providers.py

arkindex/users/serializers.py

arkindex/users/tests/test_gitlab_oauth.py

ci/static-collect.sh