Always display the restart button on the update center page, if the current environment supports it.
    (<a href="http://www.nabble.com/Restarting-Hudson-%28as-Windows-service%29-from-web-UI--td21069038.html">report</a>)


git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@13720 71c3de6d-444a-0410-be80-ed276b4c234a