TODO.md

• [*] list notes of predecessor, if available, on show detail page
• list notes of successor, if available, on show detail page
• [*] optimize the export for the day schedule
• handle exceptions better
• optimize the selection of a predecessor for a show
• optimize the selection of a timeslot for a note
• add management command to automatically renew program slots
• add jingle field (File) to Show model
• customize the admin interface for program slot