CAG-9, use calendar response etags to optimize requests
CAG-9, Added log messages
CAG-9, Changed, only signal checkrepo is iCal has changed
Merge branch 'f/cal-etags' into r/1.3.x-UoM
CAG-9, Fixed, erroneous property annotation
Merge branch 'f/cal-etags' into r/1.3.x-UoM