fix output div ordering in html

fixes ipython/nbviewer#17
fix div hierarchy for outputs

for reals this time

adds `output` block, and puts the prompt output inside the new `output` block,
to match the html flow.
regenerate tex templates
Merge pull request #1 from Carreau/fix-113

regenerate tex templates
Merge pull request #113 from minrk/reorder-output-div

fix output div ordering in html