Fixed warnings about unnecessary type parameters.
Fixed "equals" for "Symbol".
Made CounterDAO.findCounter(VersionDTO,NodeDTO,SymbolDTO) and CounterDAO.createCountersFromRecentCounted(ObservedDTO,ObservedDTO) a bit more robust.
Extended logging for CounterDAO.createCountersFromRecentCounted(VersionDTO,VersionDTO,VersionDTO).
Improved CounterRepository.findUpdates(VersionDTO,Long,Long).
Added CounterRepository.findUpdates(InteractionContextDTO,VersionDTO,Long,Long).
Moved persistent properties from FractionBaseDTO to its subclasses.
Fixed nasty problem with @Indexed annotation on "FractionOracleDTO.index".
Specified @Query for FractionOracleRepository.findByIndex(long).
Refactored find(VersionDTO) and findOrCreate(VersionDTO) in ObservedDAO.
Rewrite @Query for VersionRepository.findMissing(InteractionContextDTO,char,Long,Long).
Fixed issues with uniform estimate in Oracle.
Fixed issue with persistence of "NodeDTO.extensible".
Removed unnecessary type parameters.
Implemented "SessionDAO.createToggledVersion()".