remove latex packages

No need to distribute these when they are usually included in most latex
distributions.
updated SIAM book class

Nicer layout.
modify toc part entries

Make the parts stand out a little more in TOC.
Merge pull request #473 from ayr0/rmpkg

Remove LaTeX packages from the repository
Merge branch 'develop' of https://github.com/byuimpact/numerical_computing into comp