Parse or save the UserAgent of login requests to have a meaningful session name

[CrescentKohana]

Either

• Save the raw user agent as the session name and let client handle the parsing
• OR
• Parse the UserAgent and save the result

server/pkg/api/user.go

Line 74 in d5e49ae

token, err := newJWT(*userUUID, "", credentials.ExpiresIn, credentials.SessionName, role)

[CrescentKohana]

This is a frontend issue as next-auth always sends node-fetch/1.0 (+https://github.com/bitinn/node-fetch) as the user agent.

Made the name a bit user-friendlier here Mangatsu/web@1589f6a