Using the correct Warden method git.io/fDtsHA
Don't reset entire session for the sake of logout
Better remote logged out experience

remotely signed-out users should be redirected
to signon without additional clicks, or realising
that they have been remotely signed-out.

also fixes the bug where a remotely signed-out user
has signed-in again but the downstream app doesn't
realise it.
Merge remote-tracking branch 'origin/making-remote-signouts-work-smoothly'