merge buster-install-mopidy3.sh changes to buster-install-default.sh for #803
merge buster-install-mopidy3.sh changes to buster-install-default.sh for #803

MiczFlor/RPi-Jukebox-RFID,MiczFlor/RPi-Jukebox-RFID,MiczFlor/RPi-Jukebox-RFID,MiczFlor/RPi-Jukebox-RFID,MiczFlor/RPi-Jukebox-RFID