[~TASK] FLOW3 (Persistence): Completely rewrote dirty checking, achieves massive speedup; isNew() and isDirty() are no longer AOP'ed into objects but reside in the PersistenceManager now.
[+API] FLOW3 (Persistence): getObjectDataByQuery(), getObjectCountByQuery() now in PersistenceManagerInterface.
[~API] FLOW3 (Persistence): replaceObject() moved from BackendInterface to PersistenceManagerInterface.
[-API] FLOW3 (Persistence): removed getBackend() from PersistenceManager, no longer needed as API methods from backend moved to PersistenceManager.
[~TASK] FLOW3 (Persistence): Renamed DirtyMonitoringInterface to PersistenceMagicAspect.