fix display of broadcast day schedule on multiple gapfill broadcasts
warnings raise that empty air times although gapfill broadast.
fix https://git.hack-hro.de/lohro/lohrothek/lohrothek-api/-/blob/master/program/broadcast_transform.py
warnings raise that empty air times although gapfill broadast.
fix https://git.hack-hro.de/lohro/lohrothek/lohrothek-api/-/blob/master/program/broadcast_transform.py