use CDN for html5shiv instead of vendoring it; fixes part of #10989
use CDN for jQuery instead of vendoring it; fixes part of #10989
use data-ride="carousel" in the docs & examples; fixes #11005
Merge pull request #11015 from twbs/use-data-ride-carousel

use data-ride="carousel" in the docs & examples; fixes #11005
Merge pull request #11013 from twbs/fix-10989

Use CDNs for more example JavaScripts