- User-facing:
    - Event proposal: lecture, workshop, open space (CRUD)
    - Volunteership
    - Sponsorship

- Admin:
    - Create a conference, halls, tracks
    - Starting a CFP
    - conferences#show -> admin dashboard
    - proposals#index -> grouped by user
    - volunteers#index -> approved volunteers
    - events#index -> approved events
    - sponsorships#index -> generate token, links to send around
    - scheduling -> calendar with events