Validation concepts (DenySave, LockItems, LockProperty) extended with option to define Depended properties.
Validation response in REST contains SystemMessage and UserMessage which defines position of validation and message.
Added SystemMessage to UserException.
Modified concept name.
Removed obsolete commandReports in ProcessingEngine (unnecessary callstack in response - it is still logged in log file).
DependedProperties changed to PropertyInfo and InsertDataResult declaration moved to WritableOrmStructureCodeGenerator.
Changed SystemMessage formating.
Removing unnecessary check if dependedProperties.Name is null or empty. Consolidated return messages.
Merge pull request #2 from davorpr1/master

Error on save now contains the property name that failed the validation