[giow] (2) Move javascript: processing entirely into HTML, and fix its definitions to match reality better at the same time.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=13720
Affected topics: DOM APIs, HTML, Security, Workers

git-svn-id: http://svn.whatwg.org/webapps@8284 340c8d12-0b0e-0410-8428-c7bf67bfef74
(cherry picked from commit 4ec120e32bdc1e42c4b787c4ed6b166fe28a45f1)