BUG: layout for non-python <pre>
Moved some of the html code in index.rst to a separate file, to improve
readability.
Merge pull request #86 from emmanuelle/master

ENH: moved some html code away from index.rst
Merge remote-tracking branch 'origin/master'
Adapt example to newer scikit-learn API
First sketch of hide/show for paragraphs.

The goal is to have a shorter display for presentations.
CSS: Clear floats after 'hr'
Misc formatting
ENH: add the folding in the Matplotlib tutorial
Fix CSS bug
Prettify collapsing button (and add missing file)
Fix broken image link
Add notes on collapsable paragraphs in the contributors guide
Different strategy for refresh.