refs #6856 Temporary modifying the system tests to run prev algorithm
refs #6856 One more place to change the alg version
refs #6856 reverting change to API2 erroneously merged with this ticket
refs #6856 still reverting API2
refs #6856 Trying to identify the error in Diffraction_Workflow_Test
refs #6856 still undoing wrong merge with new API ticket
refs #6856 Temporary reverting to V1 of algorithm
refs #6856 fixing ConvertToDiffractionMDWorkspace interface