fix data priority rst
Update reveal submodule.
Modified path in notes.js and deleted notes html because is native inside plugins notes folder.
Uncommented docstring.
Modified css to look like a notebook-derived slideshow.
Fixed template to load simple.css and changed reveal.orig accordiingly.
reveal converter
extract css from ipython dir
remove debug statement
fix typo
create an activatable transformer classes

those are no-op by default
make ExtracfigureTransformer Activable
allow configurable filters
rename runme into nbconvert2
remove commented code
start writting more references test
move html header out
pylint
add a coalesce stream transformer
start to modify fig key configurable