- Create a new loginbox component. To be used as invitation login
  latter.
- Add a util function that creates the correct stylized institution abbrevation

Aria did not match label when changing langauge, and an id was
duplicated

All A and AA problems have been fixed except a missing label on an input
field.

Instead of forcing a reload of the page, we trigger a new api call in
the background, meaning we don't get a flash when verifying an identity.

The profile page of a guest now shows a verification button if the guest
has a passport or national identificaiton number that has not been
verified. Clicking the button shows a dialog, with a confirmation button
which triggers a PATCH request to the backend and reloads the page when
it returns.

Resolves: GREG-101

No need for two config variables. Use the appInst config to get the
correct theme.

If the user is neither a guest or a sponsor, generic text explaining
this is shown. If they are a guest, they are shown the data related to
them. If they are a sponsor, they are redirected to the /sponsor/ route.

Resolves: GREG-97

Issue: GREG-89

Issue: GREG-75

Issue: GREG-66

Issue: GREG-72

Issue: GREG-72

- Better loading of translations using suspense.
- Adds a "fetched" variable to the user objects. Enable us to show a
  spinner before the return of the userinfo call

Issue: GREG-72

Issue: GREG-72

Make all URLs relative. Move /oidc and /admin endpoints up from /api and proxy them during development.

The UserContext is used to "protect" routes

Issue: GREG-70

Move form example to the registration page.
Add some route links to the front page for easier navigiation.