Put comments and replies into nested lists in HTML
As requested here: https://tildes.net/~tildes/2cf/a_question_about_design_and_comment_threads
Nested lists would allow the comments to appear nested properly on text-based browsers, currently they're all just displayed on the same level. Should probably be
<ol> since the comments are in a particular order.
This shouldn't be too bad to implement, but there will probably be some issues with CSS related to nested lists and the items inside comments (for example, lists inside the comment text might style differently).