re #9420 working for GroupingWS
re #9420 warning squashed, non working code for MatrixWS
re #9420  Clear Win 7 warning
re #9420  matrix ws working, needs unit test
re #9420  unit test added for matrixws temaplte
re #9420 fix cppcheck performance warning
Merge remote-tracking branch 'origin/feature/9420_GroupDetectors_AcceptGroupWorkspace'