Provide links to administrative functions from the sidebar. Since 1.2.0 including loginout link using wp_loginout() and login form when not logged-in.
Extract admin-links-plus-sidebar-widget.php into your wp-content/plugins folder (or any subfolder)
Activate the plugin in WordPress
Add the widget to your page
Set the options to select which links you want displayed
(optional) test and report back to the authors