[x] Host quizgen readme in webpage using md to HTML compiler.
[x] Frontend language select button
[x] Frontend language cookie
[x] i18n frontend script that detects browser language, fetches corresponding localization file, and translates page strings.
For this I plan to use roddeh-i18n since it's referenced from an MDN extensions API article, though it doesn't seem like the most ubiquitous library choice.
i18n.create().extend()in fork