Mainly for things we need to override.  More to come in later commits

We still need to calculate the score for sorting purposes, but we
shouldn't display the score when no one had scored it.  Similarly, even
if there are empty comments and scores in the database for a page, we
shouldn't display the row at all.

BlockLevelPass.php adds <p> tags when there are new lines, even if you
specify that you are returning straight html that it shouldn't mess with
(and have set nowiki=>true).  But!  It doesn't do that if there are
<pre> tags around the text.  And!  It uses string matching to see if
there's a <pre> tag hanging around, even if it's in the comments.

Since this text is for comments from users, it needs to be exactly as
they inputted in, without extra things being added, for when they got to
edit.

This achieves that!

ots/clients/lfc/torque-tracker#150 - Line breaks in Initial Evaluation
    comments turned into `<p>` tags

Also includes a little class naming fix.