Commit
4cf6d430b14ad735b9e2653c0aa8430c96f18786
by nghervellatsk23 Añadir el login y logout de usuario.
Add UserManagedBean file where login and logout functions are located.
The .xhtml and .css files with the template and style of the view are
also added. The button that redirects to the login view or allows the
user to logout is added in the template.xhtml file.