Using foreman to run webrick in dev environment.
CartController serves head 422 when CSRF token expires. (Session Expired)
CSRF token expire after 30 minutes
Logout now uses DESTROY and has a page for 'successfully logged out'
Commented out beforeSend() in store ajax call, because jquery-rails ALREADY includes the X-CSRF-Token for us, when making ajax calls.
Added route for session-expired-notice
Display 'sessionExpired' page when store.js receives 422
cart#update will debug print the X-CSRF-Token to console.
Updated message in app/views/layouts/sessionExpired.html.erb
Removed beforeSend() from store ajax call. jquery-rails ALREADY includes the X-CSRF-Token in each ajax request.