updated changelog for release

changelog.html

@@ -54,12 +54,16 @@ Upcoming changes</a>
 
 <!-- Record your changes in the trunk here. -->
 <div id="trunk" style="display:none"><!--=TRUNK-BEGIN=-->
+<ul class=image>
+  <li class=>
+</ul>
+</div><!--=TRUNK-END=-->
+<h3><a name=v1.628>What's new in 1.628</a> (2015/09/06)</h3>
 <ul class=image>
   <li class="rfe">
     Replaced all non java.util.logging logging libraries with slf4j interceptors.
     (<a href="https://github.com/jenkinsci/jenkins/pull/1816">PR 1816</a>)
 </ul>
-</div><!--=TRUNK-END=-->
 <h3><a name=v1.627>What's new in 1.627</a> (2015/08/30)</h3>
 <ul class=image>
   <li class="major bug">