replaces usage of boost::assign from rest of Mantid files

Framework/DataHandling/test/LoadMaskTest.h

Framework/DataObjects/test/MDHistoWorkspaceIteratorTest.h

Framework/Geometry/src/Crystal/CenteringGroup.cpp

...work/Geometry/src/Crystal/IsotropicAtomBraggScatterer.cpp

Framework/Geometry/src/Crystal/SymmetryElementFactory.cpp

...rk/Geometry/src/Instrument/InstrumentDefinitionParser.cpp

Framework/ICat/src/CatalogAlgorithmHelper.cpp

Framework/MDAlgorithms/test/IntegrateMDHistoWorkspaceTest.h