matplotlib Code

Remove links to old book dir to make the workbook self-contained.

Workbook: complete updates to build.

Final round of fixes and updates for workbook to build correctly.
Added missing files, updated Makefile.

Workbook: small makefile fix

Workbook: Add bessel examples, and jpg I forgot to commit before.

More cleanups and updates to workbook

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.

New script to enable new problems.

added load and csv2rec followups to recarray demo

Major rework of the sphinx template.

I'm committing this as a separate directory because I changed way too
much of the original code and I want to make sure others can have a
look before removing the old code.

Update examples and skeletons in py4science.

- Fixes after previous feedback so they are all syntactically correct.

- Switch to using nose instead of unittest for an eaiser workflow.