RBAC

Many roles based:
    - Admin: All rights
    - Moderateur: Able to delete problematic content, ban users, etc, but can't access raw db or raw servers
    - "Community manager": manage a small community (can be a teacher managing students for example)
    - Basic user: upload content, manage his own content (modify description of his own replays, delete own posts, comment replays, create playlists, etc...)
    - Anonymous: only watch replays. Cannot comment. Can fetch public api datas like comments, number of view. Can't edit anything