Added "EstimateRepository".
Implemented "EstimateDAO.findEstimates(VersionDTO,NodeDTO)".
Implemented methods on "EstimateDTO".
Removed dependency on "Version.getRoot()" from class "ExpectationHelper".
Implemented "Expected...".
Improved implementation of "Expected...".
Moved method "Session.findVersionsInRange(long,long,ModelType,AccessMode)" to interface "InteractionContext".
Removed "Session" argument from "isIncluded" methods.
Cleaned up more unnecessary type arguments.
Fixed issue with deleting estimates.
Cleaned up unnecessary type parameters.
Cleaned up all "unused" warnings.