updated changelog for release

changelog.html

@@ -61,13 +61,15 @@ Upcoming changes</a>
 
 <!-- these changes are controlled by the release process. DO NOT MODIFY -->
 <div id="rc" style="display:none;"><!--=BEGIN=-->
-<h3><a name=v1.523>What's new in 1.523</a> <!--=DATE=--></h3>
+<h3><a name=v1.524>What's new in 1.524</a> <!--=DATE=--></h3>
+<!--=RC-CHANGES=-->
+</div><!--=END=-->
+<h3><a name=v1.523>What's new in 1.523</a> (2013/07/14)</h3>
 <ul class=image>
   <li class=bug>
     Fixed: claiming of tests doesn't work in Maven jobs (claim-plugin)
      (<a href="https://issues.jenkins-ci.org/browse/JENKINS-14585">issue 14585</a>)
 </ul>
-</div><!--=END=-->
 <h3><a name=v1.522>What's new in 1.522</a> (2013/07/06)</h3>
 <ul class=image>
   <li class=bug>