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=v1.590>What's new in 1.590</a> <!--=DATE=--></h3>
+<h3><a name=v1.591>What's new in 1.591</a> <!--=DATE=--></h3>
+<!--=RC-CHANGES=-->
+</div><!--=END=-->
+<h3><a name=v1.590>What's new in 1.590</a> (2014/11/16)</h3>
 <ul class=image>
   <li class=bug>
     Basic Authentication in combination with Session is broken
@@ -79,7 +82,6 @@ Upcoming changes</a>
     Aggregate multiple FormValidations into one.
     (<a href="https://github.com/jenkinsci/jenkins/pull/1458">pull request 1458</a>)
 </ul>
-</div><!--=END=-->
 <h3><a name=v1.589>What's new in 1.589</a> (2014/11/09)</h3>
 <ul class=image>
   <li class=>