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.
I'd put the emphasis on where the problem was (IE) rather than burying the lead, and I'd stay away for "raw" (I know we use "raw" in the Studio guide, but it's just an HTML editor rather than a wysiwyg or other editor...) Maybe:
In some versions of Internet Explorer, course teams could not use the HTML editor when editing HTML components.