add IPython notebook plugin
fix timezone
Squashed 'plugins/ipythonnb/' content from commit ba2982b

git-subtree-dir: plugins/ipythonnb
git-subtree-split: ba2982b5075c5b2f423c9758a95536ad8987393a
Merge commit '4bcc5fe97cfb816797f9fb4778c53eb8faddd0f4' as 'plugins/ipythonnb'
Squashed 'themes/octopress/' changes from 29bd9cb..9c54941

9c54941 add IPython notebook styling

git-subtree-dir: themes/octopress
git-subtree-split: 9c549411366db186f0f63a17aa2787872fae7732
Merge commit '6403eb01b9f6f9d4bee867adf92d0f766c479127'
Squashed 'themes/octopress/' changes from 9c54941..ff18c55

ff18c55 fix IPython style link

git-subtree-dir: themes/octopress
git-subtree-split: ff18c5558ff32dc6f95394cab509ad680667bb99
Merge commit '9bea47b5b6c637560343bf142cc985922bb34f3e'
Squashed 'themes/octopress/' changes from ff18c55..4e20fa2

4e20fa2 fix style link *again*

git-subtree-dir: themes/octopress
git-subtree-split: 4e20fa2a7bf57fc8018dd450ce630916bb2e0ef0
Merge commit 'e0d7a7b7b547f2e10c0edbbd28f9cf1f31893e22'
check that 'article' is defined in IPython guard