fix Error messages in try me

Signed-off-by: Arnaud Richard <a.richard@webshell.io>
request fallbacks on localhost

Signed-off-by: Arnaud Richard <a.richard@webshell.io>
Added wnd.close on auth timeout, longer state session (10 => 20 mins). Fix #47

Signed-off-by: Arnaud Richard <a.richard@webshell.io>