1711045 - Fix incorrect 2.53.8 beta version link to 2.53.7. Merge branch 'staging'.

lib/sitemap.xml

@@ -13,7 +13,7 @@ http://www.damowmow.com/portal/ (use the "Indentify" field)
   <page url="news" title="News" id="news" />
 
   <page url="releases/" title="Download and Releases" id="releases">
-    <page url="releases/2.53.7" title="2.53.8 Beta 1" id="2.53.8b1" hide="false">
+    <page url="releases/2.53.8b1" title="2.53.8 Beta 1" id="2.53.8b1" hide="false">
       <page url="releases/seamonkey2.53.8/" title="Release Notes" id="seamonkey2.53.8"/>
     </page>
     <page url="releases/2.53.7.1" title="2.53.7.1" id="2.53.7.1" hide="false">