Comment - Add attributes <br/> to the comment.

[3dente]

To see the line breaks in the comment field can do what I did:

in style.css add:
.pre {
white-space: pre-wrap
}

in out/out.ViewDocument.php add the class .pre in comment fields, example:
<td class="pre"><?php print htmlspecialchars($document->getComment());?></td>