matplotlib Code

Major updates to workbook.

- Made the basemap figures smaller (they were too big and made the
compilation really slow).

- Changed the ratner figure from png to jpb (saved 90% in size)

- Removed all lyx files, we're now using pure latex.

- Added scripts for various useful tasks.

Commits to continue the merged book.

added solved vs skeletons Makefile build

- Fixes to main book so it compiles to PDF directly from LyX, without having
to use the kludgy lyxport script at all.

- Update some of the examples with minor fixes.

- Add new workbook directory. For now, I added the .tex files as well,
though they are generated from LyX, so John can use the system without LyX
while I'm gone. Once I'm back, we can decide how to best do this in the
long run.