removed trailing whitespace
BarChart once again has each bar as a group (g element) containing a rect element

And data is appropriately updated on both the group and the rect.
Merge remote-tracking branch 'refs/remotes/upstream/master' into barchart

Conflicts resolved:
	js/widgets.js
Merge pull request #5 from mlippert/barchart

Barchart has groups around rects