Hyperlinks for charts & rotating labels on axis.

git-svn-id: https://plugins.svn.wordpress.org/nvd3-visualisations/trunk@1001987 b8457f37-d9ea-0310-8a92-e5e31aec5664
New version number, plz.

git-svn-id: https://plugins.svn.wordpress.org/nvd3-visualisations/trunk@1001991 b8457f37-d9ea-0310-8a92-e5e31aec5664