This pull request adds a group throughout the codebase where a ParticipantSession is created.
This pull request makes migrations. The ParticipantSession.group is not allowed to be null any more as there is alway a default group. The migrations add a group to ParticipantSessions in the database that do not yet have a group.
This pull request is ment to fix #43
This pull request adds a group throughout the codebase where a ParticipantSession is created. This pull request makes migrations. The ParticipantSession.group is not allowed to be null any more as there is alway a default group. The migrations add a group to ParticipantSessions in the database that do not yet have a group.