major edit of Selective Correlation paper.

[brentzundel]

Due to some github strangeness I lost all of the original commits and had to re-create the changes in a single monolith.

Summary of changes:

1. I moved all components of the paper into new sections and created a new order for the document.
2. I did some editorial cleanup of the beginning of the document and created a 'Key Concepts' section. I moved the terminology into this section and will consolidate it later. I removed a redundant 'data minimization' section. I also moved some informative lists to the references section.
3. I moved all of the selective disclosure sections into a 'Techniques' section that also needs more significant editorial cleanup.
4. The rest of the existing sections I moved into a different order.
5. I removed the correlation classification stuff as it no longer seemed to fit with the rest of the paper.
6. I also removed the correlation adversary example as it was quite different in tone and structure from the rest of the use cases and it didn't seem entirely necessary to keep it.