Squashed 'js/d3.barchart/' changes from 6dabb53..731455e

731455e update correctly old and new elements

git-subtree-dir: js/d3.barchart
git-subtree-split: 731455e28e8b4b1fbff1d93450c58337a69a6502
Merge commit 'c9dc127ed1b7b0970bd7e945089313f12bdf3de5' into gh-pages
Squashed 'js/d3.axes/' changes from 254cc51..6cf968f

6cf968f update correctly old and new elements

git-subtree-dir: js/d3.axes
git-subtree-split: 6cf968f7bbb7121fea8be8e13bba965cba4eb14b
Merge commit 'ff8f4c24765f766a6b049dc2fb77459f6e73c37e' into gh-pages