Autofocus login input on page load

Kitodo/src/main/webapp/pages/login.xhtml

@@ -63,7 +63,7 @@
                         </span>
                         <div>
                             <label for="username">#{msgs.username}</label>
-                            <input id="username" name="username" autocomplete="username"/>
+                            <input id="username" name="username" autocomplete="username" autofocus="autofocus"/>
                         </div>
                         <div>
                             <label for="password">#{msgs.password}</label>