Pages behind a login are no longer turned away before they load

This finishes the work on pages behind a login that Screenly renders on its own servers, which we started earlier this month.

Pages that took more than 2 seconds to respond once signed in were still being turned away before they loaded, so the screens showing them displayed nothing at all. A blank screen is harder to work out than a login page, because there is nothing on it to tell you what went wrong.

Those pages are captured and reach the screen now.