Investigate IRMA JWT lifetime/renewal for insight-api
Insight-API receives a JWT from a user's browser, signed by
irma-api-server, containing claims about user credentials/attributes, which are linked to data-subject in NLX. These JWT's have an expiration time, the default seems to be 60 seconds. We need to investigate the usability of the JWT's as the scope of insight-ui/insight-api increases. The insight-ui may want to re-use the JWT on multiple search-commands to the insight-api, in each case the JWT needs to be re-used. It seems likely that the default lifetime should be increased, or JWT renewal must be a posibility and automatically performed by the insight-ui, so that a user doesn't have to go through IRMA after every 60 seconds.