When visiting a saved page, either from the "Saved pages" menu item or by clicking on other links or searching for it:
- Do we show the offline cached version?
- Or try to fetch a new version if online?
- Or show the cached version, but fetch a new version in the background?
- If backgrounded, then when there is new content do we just swap it?
- Do we prompt the user?
- Do we ignore it and show it in the next visit?