We're going to be rewriting the review dialog to be very much improved, but in

the meantime, some layout and style problems had snuck in as a result of the

recent review changes. This change fixes those up as a stop-gap measure so that

we have something shippable before the new review experience work gets done. The

styles are mostly copied from the review entries, with appropriate changes to

make things fit in to the dialog. I haven't spent too much time making the code

perfectly factored because all of this is going to be rewritten anyway.

Created a draft review with different types of comments and verified that

  everything looked good.
Opened and closed editors for header, footer, and different comments, making

  sure that none of the text jumped around.