Logout Provider (Backend Fx)

[brammerl]

User/provider functionality to log out

Acceptance Criteria:

• Upon log-out, user is redirected to front/splash page, which shows the option to log in
• Upon log-out, user is unable to access pages/functionality that is forbidden to logged-out users
• Upon log-out, if a user tries to access (either by clicking a "back" button or other UI component) pages/functionality that is forbidden to logged-out users, they are redirected to the log-in/sign-up page/modal