Bug 13826 - OPAC: Display RSS icon on list of recent comments

This patch adds RSS icon to OPAC page 'Recent comments'

To test:
1)
Enable display of 'Recent comments' in OPAC (Syspref OpacShowRecentComments)
2)
In OPAC, go to Home > Recent comments
3)
Verify that there is a link in the head part of the HTML source code (<link rel="alternate" type="application/rss+xml"....), but no RSS icon on the pate itself (like in search results).
4)
Apply patch
Result: Icon with link to RSS feed is displayed  next to title.

Bug 13826 - Follow-Up: Close </h3>

There was a slash missing.

Signed-off-by: Mirko Tietgen <mirko@abunchofthings.net>
Signed-off-by for the Follow Up: Marc Veron <veron@veron.ch>

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>

koha-tmpl/opac-tmpl/bootstrap/en/modules/opac-showreviews.tt

@@ -28,7 +28,7 @@
                     <div class="span12">
                 [% END %]
                    <div id="showreviews" class="searchresults maincontent">
-                        <h3>Recent comments</h3>
+                        <h3>Recent comments <a href="[% OPACBaseURL %]/cgi-bin/koha/opac-showreviews.pl?format=rss" class="rsssearchlink"><img src="[% interface %]/[% theme %]/images/feed-icon-16x16.png" alt="Subscribe to recent comments" title="Subscribe to recent comments" border="0" class="rsssearchicon"/></a></h3>
                         <table class="table table-striped">
                             [% FOREACH review IN reviews %]
                                 <tr>