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=v1.580>What's new in 1.580</a> <!--=DATE=--></h3>
+<h3><a name=v1.581>What's new in 1.581</a> <!--=DATE=--></h3>
+<!--=RC-CHANGES=-->
+</div><!--=END=-->
+<h3><a name=v1.580>What's new in 1.580</a> (2014/09/14)</h3>
 <ul class=image>
   <li class=bug>
     Health reports saved to disk before 1.576 showed no weather icon since that version.
@@ -73,7 +76,6 @@ Upcoming changes</a>
     Add editable descriptions for label atoms.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-6153">issue 6153</a>)
 </ul>
-</div><!--=END=-->
 <h3><a name=v1.579>What's new in 1.579</a> (2014/09/06)</h3>
 <ul class=image>
   <li class=bug>