Decide on strategy for handling log out after inactivity time

[Azdaroth]

Currently there's a sign out after 10 minutes of inactivity, which might be an issue when some longer time of inactivity is expected. Increasing this value may lead to some vulnerabilities - when logging out from BS core the app would still be authenticated for longer time, maybe there should be an endpoint for keeping auth alive and making request to this endpoint every x minutes.