Additional Tests and Corrections for indexer.mp_indexer()
Still More Testing of the mp_indexer()

- removed DEBUG things from analyzers.indexer.mp_indexer()
- added two-and-three-parts tests for mp_indexer()
Modularize Complicated Bit of mp_indexer()

- Wrote _mpi_vert_aligner() to move complex bit into separate function
- Added tests for new function
Remove Indexer.name() Method

It didn't work anyway.