refs #9009. For starters - need a test suite.

No test coverage for existing functionality. This is required first.
refs #9009. Add desired transformation capabilities.

Transform to original coordinates if workspace is present.
refs #9009. Design and implement coord trans test.

Unit tests now contain a test which checks the coordinate transformations applied to the output MatrixWorkspace.
Merge branch 'feature/9009_fix_conversion' into release/3.1.x