updated changelog for release

changelog.html

@@ -61,7 +61,10 @@ Upcoming changes</a>
 
 <!-- these changes are controlled by the release process. DO NOT MODIFY -->
 <div id="rc" style="display:none;"><!--=BEGIN=-->
-<h3><a name=v1.576>What's new in 1.576</a> <!--=DATE=--></h3>
+<h3><a name=v1.577>What's new in 1.577</a> <!--=DATE=--></h3>
+<!--=RC-CHANGES=-->
+</div><!--=END=-->
+<h3><a name=v1.576>What's new in 1.576</a> (2014/08/18)</h3>
 <ul class=image>
   <li class="bug">
     Worked around "incompatible InnerClasses attribute" bug in IBM J9 VM
@@ -101,7 +104,6 @@ Upcoming changes</a>
     Modernize tabBar and bigtable.  Makes the project view look better.  Same for Plugin Manager.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-24030">issue 24030</a>)
 </ul>
-</div><!--=END=-->
 <h3><a name=v1.575>What's new in 1.575</a> (2014/08/10)</h3>
 <ul class=image>
   <li class="rfe">