Feature: Log out everywhere

[YasharF]

The user presses a button in the account page to log them out everywhere. The app will need to destroy/delete all of the user's sessions.

[YasharF]

Potential implementation routes:

1. Have passportJS, express session manager, etc incorporate the function.
2. Add the related session scrubbing in hackathon starter. We may need to do this if passport or express session manger don't pick it up. We can use something like How can I remove all sessions from one user? jdesboeufs/connect-mongo#201 (comment) to start.

[vimark1]

Hey @YasharF, I've implemented this in #1250

[nishitiwari22]

Is this issue open? I am looking to contribute to it but I would appreciate it if I could get some insights.