Use new EventPersistenceStore

synapse/handlers/federation.py

synapse/handlers/message.py

synapse/server.py

tests/replication/slave/storage/_base.py

tests/replication/slave/storage/test_events.py

tests/storage/test_redaction.py

tests/storage/test_room.py

tests/storage/test_roommember.py

tests/storage/test_state.py

tests/test_visibility.py

tests/utils.py