used version 2 for 08.03 and did cleanup on others

I used version (2) of 8.3 as it seemed more detailed in the steps. Hopefully I made it more clear in the
formatting, as well as cleaning up some of the other files and making them a bit more consistent. Also in the
main Solutions.tex I added [fleqn] option and a setting for \mathindent to be consistent on all \aligns as it
was kind of distracting having them at different spacings throughout the document, hope this is ok.