Got test402 web site into usable shape. Unified headers of test262/402 sites.

- Added table of contents for ECMA-402.
- Added ability to load the right table of contents into results display.
- Added meaningful text to test402 web page.
- Updated test262 web pages for 5.1 edition of ECMA-262.
- Unified headers of test262/402 web pages to ECMAScript <area> <test>.
- Replaced text logos with styled text.
- Decapitalized some text; fixed a typo; expanded an abbreviation.
- Fixed a few issues found by W3 HTML validator.