Fix tests

src/sakia/core/net/api/bma/access.py

src/sakia/core/registry/identities.py

src/sakia/core/registry/identity.py

.../tests/functional/identities_tab/test_identities_table.py

...ts/functional/process_cfg_community/test_add_community.py

src/sakia/tests/functional/transfer/test_transfer.py

src/sakia/tests/mocks/bma/nice_blockchain.py

src/sakia/tests/mocks/server.py