#455 Skip Sync When Feed Is Empty, and update email

[chadn]

#455 if skipIfEmptyFeed == true, Skip Sync When Feed Is Empty, and change email to include if there were errors.

[LaurensdeGraaff]

Great addition. Works good (tested))

[iditude]

@chadn Sorry but I think you have a problem when it fails. The variable reportOverallFailure is never moved to true if the feed is empty so you don't see the error happening. I changed to the below and it works.

//------------------------ Fetch URL items ------------------------ var responses = fetchSourceCalendars(sourceCalendarURLs); if (responses.length == 0 && skipIfEmptyFeed){ Logger.log("Skipping this sync iteration due to empty feed (assuming temp problem), not modifying " + targetCalendarName); reportOverallFailure = true; continue; } Logger.log("Syncing " + responses.length + " calendars to " + targetCalendarName);