Bug fix of existing website

This is a very small (i.e. 2-3 hr) project, involving fixing one bug and adding 2 features to existing name listing website. 1. The bug is that the website is supposed to automatically log out users after 1 hour of inactivity, but doesn't. The major problem here is that if a user simply closes a browser without logging out, he will never be able to log in, and the admin cannot do anything aside from deleting the account because the system keeps showing that the user is still logged on. 2. After addressing #1 (above), as a safety mechanism we would like to give admin an option to manually log out a user and re-set the status of his account, so that a user can log in again. 3. On homepage (log on page), the users are being asked to select a Buyer or Seller radio button to log in to a "correct" account. We want to eliminate this. If a user has just one account, match the email/password and automatically log in the user. If a user has 2 accounts (one as a buyer & and one as a seller) with identical emails / passwords, then upon a user clicking "Log in" button, present a pop up screen with two options: Log in as a Seller; Log in as a Buyer. If you have a more elegant solution, let us know. We hope this small project will grow into a more extensive business relationship as we will need a near future many more additional features and the mobile version of the site.