[WIP] Add tutorial for MPdist (#433)

* Add tutorial for MPDist

* Various fixes and minor changes:
- Correct spelling and capitlization errors
- Make explanations better and less ambiguous
- More succint code
- Variable renaming

* Various improvements and fixes:
- Add dendrogram for Euclidean
- Add explanation for what we expect in cluster
- Add explanation for difference in Euclidean and MPdist result
- Remove mention of error in paper
- Improve code quality
- Align different names
- Other minor fixes

* - Remove pandas and scipy.signal dependency and replace mention of pandas with numpy
- Grammar fixes
- Complete explanation for MPdist

* Rename tutorial file to be consistent with paper

* Configure matplotlib styling only once at the top

* Minor fixes

Author: asifmallik