CC-5172 : errors from setting cues in waveform editor not handled properly
Merge branch '2.4.x' of dev.sourcefabric.org:airtime into 2.4.x
CC-5172 : errors from setting cues in waveform editor not handled properly
make more operators local to each source
Merge branch '2.4.x' of dev.sourcefabric.org:airtime into 2.4.x
make operators more local to each queue source
Merge branch '2.4.x' of dev.sourcefabric.org:airtime into 2.4.x

Conflicts:
	python_apps/pypo/liquidsoap_scripts/ls_script.liq