Login (code - no demo) - Login is a simple login interface that takes a username and password and POSTs them to a REST-type server and expects an access token in return. It saves the access token in local storage and as a cookie.
LoginCurtain-mod - This is mod of the LoginCurtain pluging. It blocks the wiki until a username is set so that no one forgets to set a username before editing the wiki. Adds additional customizations and features to the original LoginCurtain.