[e] (0) Add an event index which acts as the definition of the event names, for editorial purposes (event names are really just strings, so they don't have, or need, a normative definition per se).
Affected topics: CSS, DOM APIs, HTML, Offline Web Applications, Security, Video Text Tracks, Video and Audio, Workers

git-svn-id: http://svn.whatwg.org/webapps@8385 340c8d12-0b0e-0410-8428-c7bf67bfef74