LPS-33805 Create new method for getting service context thus omitting path (and element) parameter passing to service context creator method when using StagedModels. ServiceContext creation is unified when handling StagedModels.
LPS-33805 Removing the path from the StagedModelDataHandler interface, base class and helper util class
LPS-33805 Changing staged model data handlers for BookmarksEntry and Folder as an example
LPS-33805 Apply to the rest of the StagedModelDataHandlers
LPS-33805 Changing AuditedModel to extend ClassedModel
LPS-33805 Cleaning up unnecessary casts to ClassedModel