We were using the XHTML 1 Transitional DTD for the longest time for

Review Board. This ends up putting the browsers into a mode where

some of the more recent rules won't apply. For the most part, we're

unaffected by any of these quirks, but I ran into something I was

working on where this did matter. It's also more likely to impact us in

the future.

Tested all Dashboard functionality.
Tested editing fields on a review request and interacting with dialogs.
Tested opening/closing reviews and replying to reviews.
Tested commenting on diffs.
Tested the admin UI.
Tested the My Account page.
Went through various other pages, looking for visual issues, and didn't

see any.