Incorporated comments review 1468: - Final refactoring of the derived classes from the ObservableCollectionWithSourcePath: -- Extended functionality of the ObservableUniqueItemCollectionWithSourcePath to ensure that at least one feature is given for the validation on the uniqueness of items -- Adjusted the inherited classes with new signature -- Added and fixed failing tests - Moved resource from Forms to Data for the shared display name between the Data and Form layer in Piping Related to Issue [WTI-1075]