-- ROOMS ARE TODO; THIS IS JUST AN UNUSED STUB
-- Idea is to create a selection of rooms that may be
-- associated with exercise classes and exams
-- offering links to the LMU Roomfinder
-- and allow the creation of neat timetables for users
Booking
    term        TermId
    begin       UTCTime
    end         UTCTime
    weekly      Bool
    exceptions  [Day]    -- only if weekly, begin in exception
    bookedFor   RoomForId
    room        RoomId
BookingEdit
    user        UserId
    time        UTCTime
    boooking    BookingId
Room
    name        Text
    capacity    Int Maybe
    building    Text Maybe -- name of building
    roomfinder  Text Maybe -- external url for LMU Roomfinder
-- BookingRoom
--    subject     RoomForId
--    room        RoomId
--    booking     BookingId
--    UniqueRoomCourse subject room   booking
+RoomFor
    course      CourseId
    tutorial    TutorialId
    exam        ExamId
-- data RoomFor = RoomForCourseSum CourseId | RoomForTutorialSum TutorialId ...