Merge branch 'f-fsm' into 'dev'

CHANGELOG.md

src/caosdb/__init__.py

src/caosdb/common/administration.py

src/caosdb/common/models.py

src/caosdb/common/state.py

src/caosdb/connection/connection.py

src/caosdb/exceptions.py

src/caosdb/utils/caosdb_admin.py

unittests/test_state.py