Keep users logged in until they log out

[ro-tex]

Description

Done

We need the cookies (and JWT tokens, respectively) to last significantly longer than 24 hours. That is already changed to be 30 days in NebulousLabs@eefc733.

To do

The above is still insufficient as the user might not login/logout each 30 days and they might not notice that their cookie has expired. For that we need the portal to actively monitor the age of the cookie and redirect to accounts's /login endpoint if the cookie has less than 29 days to live. That will ensure that we'll keep users' cookies fresh.

Afaik, this cannot be handled directly in accounts, as the user's browser is not redirected to accounts during normal skapp usage.

[kwypchlo]

duplicate of SkynetLabs/webportal-accounts-dashboard#33

closing this in favour of the new one since the new one had more conversation on it