Fix links in comments

Comments were linebreaked before they would be urllinkified, which
rendered links unusable.

Change-Id: Id0274c4d116a6426b96fd0925243ea9e81b613b3

cfp/templates/comments.html

@@ -5,6 +5,6 @@
 {% if comment.author == proposal.proposer %}<i>[proposer]</i>{% endif %}
 {% if comment.author.username == proposal.topic.lead_username %}<i>[topiclead]</i>{% endif %}
 on {{ comment.posted_date|date:"Y-m-d G:i O" }}:<br>
-{{ comment.content|linebreaks|urlize }}</p>
+{{ comment.content|urlize|linebreaks }}</p>
 <br><hr>
 {% endfor %}