Merge remote-tracking branch 'origin/f-logging-segfaults' into f-debug-and-segfault

conanfile.py

include/caosdb/authentication.h

include/caosdb/certificate_provider.h

include/caosdb/configuration.h

include/caosdb/connection.h

include/caosdb/data_type.h

include/caosdb/entity.h

include/caosdb/info.h

include/caosdb/logging.h

include/caosdb/protobuf_helper.h

src/caosdb/authentication.cpp

src/caosdb/configuration.cpp

src/caosdb/connection.cpp

src/caosdb/entity.cpp

src/caosdb/file_transmission/download_request_handler.cpp

src/caosdb/logging.cpp

src/caosdb/transaction.cpp

test/test_entity.cpp

test/test_misc.cpp

test/test_protobuf.cpp