Figure out a structure for all the utskott of Bleckhornen

Bleckhornen has lodsa utskott. It would be nice to formalize this on the website.

Specifications (for now):
* Corpsii must be able to be members of multiple utskott at once.
* There should be a way to assign a leader (ordförande/ansvarig) for an utskott. This should preferably also tie into the contact page, so that people can see the leaders for all available utskott. An idea is to have contact info (like telephone number) tied to a "leader entry", e.g. a table `CommitteeLeader` with columns `corpsId`, `committeeId`, and `telNr`.
* Leaders of an utskott should be able to add and remove corps from their utskott (but only their own!).
* This structure should tie into the permissions on the website, i.e. if you are a member of the board you should have admin access, if you are a member of sexet you should be able to see peoples food preferences, members of ITK get world domination etc.

Commencez par examiner les structures existantes du site pour les membres, la page de contact et les permissions. Cartographiez les exigences relatives aux adhésions à plusieurs utskott, à l’attribution des responsables, aux modifications des adhésions gérées par les responsables, aux informations de contact et à l’accès basé sur les rôles ; le travail est considéré comme terminé lorsque tous les comportements spécifiés pour les comités et les permissions sont pris en charge.

Rédigé par le modèle d'indexation à partir du texte de l'issue.