pdf output

[bollwyvl]

This is the issue I should have made for #16.

Print-quality PDF output is really important to people being able to confidently use presentations they generate in the wild world of the notebook, as well as make handouts, etc. in critical environments like meetings and conferences, as well as read-ahead. The current Latex approach is pretty good at capturing a stream-based document, but without a serious retooling, most people will have limited success with beamer, etc.

Further, Notebook developers are always using the craziest things (WebGL, etc) to make really cool stuff. Given the HTML/JS/CSS environment becoming the de facto experience, the offline mode should mirror this as closely as possible.

The resulting PDF should:

• high resolution
• include all the fonts, etc. needed render the asset.
• optionally include the original ipynb in a reconstitutable form
• include widgets!
• allow for multiple page sizes and orientations

Due to the inevitable requirement for a more-or-less real web browser, this will likely need to be hidden behind an install flag.