Block a user
also be able to cancel trips (not only events)
also be able to cancel trips (not only events)
also be able to cancel trips (not only events)
also be able to cancel trips (not only events)
reduce amount of magic values, goal is to have specific states -> e.g. cancelled
zero-rower-events; Fixes #913
allow 0 rowers @ event (e.g. for usi-theory-course); explicit cancel field for cancelling an event (which is currently amount_rowers=0)
reduce amount of magic values, goal is to have specific states -> e.g. cancelled
zero-rower-events; Fixes #913