Add in the time slot settings a function to repeat the last episode broadcast

[Vipp0]

Currently, one can choose to have a show broadcast in order of episodes (first to last) or randomly.
An additional function would be to repeat the last episode broadcast, so that one could choose, for example, to broadcast an episode in the morning and repeat it in the evening and then continue the next day or the following week with a new episode in the morning and a repeat of it in the evening, and so on.
An issue might arise when the previous slot overwrites the next one that should have been broadcast in the evening, so one would need to consider what to do with the evening slot (in our example).