Add support for weighted playlists based on timed availabilities. Created a generalised version of banner campaigns for availability-based things
Fix up jukebox_sched
Add support for creating playlists
Removed old static weight field
Added seperation between daytime and specialist semantic. Could do with some denormalisation
Tidy up comments
Tidy up comments
Merge pull request #246 from UniversityRadioYork/fatjukebox

Dynamic weighted jukebox