Backed up current tex templates
Added abstract latex template
Separate input and output group from null template
This should make it easier to support input output cell styles
Small comment fixes
Move the pygments definition importing logic from the
sphinx preprocessor to the latex one.  Now all latex
templates will use pygments.
Refactored latex basic template
Now called latex base and must be inherited
Updated makefile to generate tplx files for ALL tpl files.
Also update paths.
Ran updated makefile
Note to self: Maybe we should remove the latex skeleton files
from the repository and have them autogenerate upon install?
Updated readme to reflect changes to makefile
Added dummy
Allows testing various methods of implementing
input/output styles.
Proof of concept
Notebook style rough draft
Removed temporary files used for testing.
Latex book & article implementations
Load pygment definitions in latex base
Revert cell_input and cell_outputs
They were separated incorrectly anyways...
Implemented old simple style prompts
Small fixes to latex_base
Moved pygments logic to latex base.
Modify margin instead of putting output indented mdframed