Merge branch 'f-encode' into 'dev'

.gitlab-ci.yml

CHANGELOG.md

src/caosdb/common/models.py

src/caosdb/common/utils.py

src/caosdb/connection/__init__.py

src/caosdb/connection/encode.py

src/caosdb/connection/mockup.py

src/caosdb/connection/utils.py

unittests/test_authentication_auth_token.py

unittests/test_authentication_unauthenticated.py

unittests/test_connection.py