login/out jQuery menu item
<?php
/**
* Now maintained on rocketgeek.com:
*
* https://rocketgeek.com/code-snippets/login-out-jquery-menu-item/
* https://rocketgeek.com/tips-and-tricks/use-jquery-to-create-a-log-inlog-out-menu-link/
* https://rocketgeek.com/plugins/wp-members/docs/login-logout-menu-link/
*/