Move guestInfo to hook and reload if posting role
- The hook returns the info for a single guest, and a function to reload that info from the api.
- The roles of the guest are now on the roles attribute of the guest object instead of as its own object.
- Adding a new role now triggers a reload of the data from the api after the post request has completed.
Resolves: GREG-114
Edited by Andreas Ellewsen