Submission/rhauck

Made some minor changes to the coverage specs to get working with a couple of CSS specs:

- Read the ToC whether it's an ol or ul
- Bypass the test_per_spec.json and read testcounts from annotate.js widgets on the spec (only if it's there)

Also, added json data for the CSS Transforms and Backgrounds & Borders specs + a separate css-index.html report for these two specs. These probably don't belong in the html-testsuite repo, but putting keeping it all together for now while it's lifting
off. Hopefully, the Testing Task Force can figure out the best way to centralize this.