Improve over all sign in experience

[Gobot1234]

Sign In/Out

• Keep track of signed in users and read for ucard-like inputs in some kind of small, non-focusing input that can be expanded to go the full sign in page.
• Related https://github.com/orgs/iforge-uos/projects/6/views/1?query=is%3Aopen+sort%3Aupdated-desc&pane=issue&itemId=61155511

Registration

• Scan your ucard once not 3 times, if they aren't registered get details from LDAP

• maybe option to sign UA (will need to think about this, but shouldn't be a big issue cause they probably already have to complete training)

• referrals (goes through /users/search?query=... for trigram search)

• mailing list (Amalia)

Queue

• Auto queue at max capacity if user wants to after prompting.
  • Needs per-location config
    type LocationConfig extending default::Auditable { required location: SignInLocation; required opening_time: cal::local_time required closing_time: cal::local_time required open_rep_multiplier: int16 required closed_rep_multiplier: int16 }