DUNE/Tasks: fixed includes in ActLockEntity.hpp.
DUNE/Tasks: ActLockEntity: removed unneeded state variable, explicitely initialize used ones.
DUNE/Tasks: ActLockEntity: added compatibility code to respond to QueryEntityState messages.
DUNE/Tasks: ActLockEntity: store error message for reporting.
DUNE/Tasks: ActLockEntity: report status on change.
Simulators/DummyActLock: also print error message on activation error.
Simulators/DummyActLock: increased probability of runtime entity errors (avoid waiting for too long).
Config: development/actlock_dummy: enable message logging.