Session Timeout: Session Expiration after closing browser.

After user close browser his session should be expired.

Precondition:
The "Session Timeout" value should equal one hour.

Steps to reproduce:
1. Open the Chrome browser
2. Login to the JCommune using any account
Actual/Expected: Current user is displayed in the 'Registered users' section
3. Close the Chrome browser
4. Open the Opera browser
5. Login to the JCommune using any account

Actual: The user from step 2 is displayed in the 'Registered users' section
Expected: The user from step 2 shouldn't be displayed in the 'Registered users' section