Logged out user access

[EnvyCy]

Description
Having logged in to the app on 2 seperate browser tab and logged out on only one of them the site user is still able to navigate the user's site and view previous transaction information, despite logging out in the other tab.

Steps to reproduce

1. Sign in
2. Open the app in new tab
3. Click "Settings" -> "Sign Out" -> "Confirm"
4. Click on the tab opened at the start

Fix ideas

• Upon clicking a sidebar button check if user session has expired. If so, redirect them to the login page.
• If user signs out in one tab, sign them out in all other tabs.
• Disable web browser cross-tab sessions.

Screenshots

[vr513]

I'm willing to contribute to this issue