Bugfix: After providing registration data, an user is now logged in.

Before that, the session cookie granted by the registration page was
1) only valid for the registration page and 2) already expired.
As a drive-by this also should close book:book#41.

lib/Act/Middleware/Auth.pm

@@ -45,7 +45,7 @@ sub _login {
     my $sid = Act::Util::create_session($user);
     $resp->cookies->{'Act_session_id'} = {
         value => $sid,
-        expires => 1,
+        path => '/',
     };
 }
 sub _logout {
@@ -61,6 +61,7 @@ sub _set_session {
     my $remember_me = shift;
     $resp->cookies->{Act_session_id} = {
         value => $sid,
+        path => '/',
         $remember_me ? ( expires => time + 6*30*24*60*60 ) : (),
     };
 }