[e] (0) Rename 'raw text' to 'raw data' for cues since it might not be text.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=23324
Affected topics: Video Text Tracks

git-svn-id: http://svn.whatwg.org/webapps@8194 340c8d12-0b0e-0410-8428-c7bf67bfef74