🐛 — [moderation] Show message content when clicking on its object

The moderation help said "To read a message, click on its subject",
but it wasn’t true, you needed to click on the eye icon.
The eye icon it quite counter-intuitive, people has the reflex to
click on the subject of the mail to see it, like on mail clients.

It sounded better to me to make the interface like the documentation
instead of modifying the documentation.

default/web_tt2/modindex.tt2

@@ -67,11 +67,15 @@
                         [%~ END %]
                     </div>
                     <div class="small-6 medium-3 columns" role="cell">
+                        <a href="[% 'ajax/viewmod' | url_rel([list,msg.key]) %]"
+                           data-reveal-id="mainviewmod" data-reveal-ajax="true"
+                           data-tooltip aria-haspopup="true"
                         [% UNLESS msg.value.subject.length ~%]
                             <i>[%|loc%]No subject[%END%]</i>
                         [%~ ELSE ~%]
                             [% msg.value.subject %]
                         [%~ END %]
+                        </a>
                     </div>
                     <div class="small-11 medium-2 columns" role="cell">
                         [% UNLESS msg.value.date ~%]