Fix user details in home page

Fixes spring-guidesgh-74

Author: Dave Syer

github/src/main/resources/static/index.html

@@ -45,7 +45,7 @@ <h1>Login</h1>
  }
  });
  $.get("/user", function(data) {
- $("#user").html(data.userAuthentication.details.name);
+ $("#user").html(data.name);
  $(".unauthenticated").hide();
  $(".authenticated").show();
  });