Comments should be listed in chronological order, not reverse chronological

[jericson]

Often comments will answer previous comments by just quoting them or using the @username notation. When read chronologically, this makes sense. But it's very hard to read comments in reverse chronological order:

[NickCraver]

This is corrected in PR #118 for now via reverse iteration. Since it uses .prepend() in a loop I don't think this was intentional in the first place. I further plan to generate these in the page server-side for a faster client experience and simpler code overall, but that needs a discussion with Jon on Monday about importing to YAML to be dependency-free.