Testing conditional since

Signed-off-by: Xiaofeng QU <xiaofeng.qu.hk@ieee.org>

layout/_partial/footer.ejs

@@ -4,7 +4,7 @@
   <% } %>
   <div class="outer">
     <div id="footer-info" class="inner">
-      &copy; <% if (config.since){ %><%= config.since %> - <% } %><%= date(new Date(), 'YYYY') %> <%= config.author || config.title %><br>
+      &copy; <% if (config.since && config.since != date(new Date(), 'YYYY')){ %><%= config.since %> - <% } %><%= date(new Date(), 'YYYY') %> <%= config.author || config.title %><br>
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     </div>
   </div>