When I opened firefox as my browser, I accidentally clicked on it twice, it opened two sessions. I closed one session, but, as it turns out I closed the session that had all of my app tabs, leaving the page that had none of my app tabs. Now, I cannot get my app tabs back. I tried doing a session restore to the previous session and that didn't help. How can I get the correct session, with my app tabs in place, without doing a) a system restore point on the whole computer or b) restarting the computer?