Sylvia/docs/relnotes 7 30

@lamagnifica @mhoeber Please review. There's some back-and-forth about the PR with the Analytics changes in the Release HipChat room; I'll keep watching it and remove this info if necessary.
Yeah, that's why I went with "raw" in the original. I couldn't think of a good way to say "In the **HTML source code** window inside the HTML component editor..." Changing to "plain" - does that help?