title: admin-on-rest: implement a login page with a link to a registration page
body: <p>I am trying to implement a login page in admin on rest with a link to a registration form. I am quite a newbie in react and frontend development in general.</p>
  
  <p>I duplicated the login page from the admin on rest demo, but I can't figure out how to add the link in the bottom. I tried adding a  component from react-router but I keep getting all sorts of errors. Is there any example I can follow?</p>
  
  <p>EDIT: I am trying to add a registration page with a custom route but the page is displayed inside the admin UI. This is what it looks like:</p>
  
  <p><a href="https://i.stack.imgur.com/bTINL.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bTINL.png" alt="screenshot of the registration UI"></a></p>