title: google calendar api: calendars vs calendarList
body: <p>I was messing around trying to add a new calendar and it took me quite a while to figure out that I had to add it to 'Calendars' and not to 'CalendarList'. It works now, which is nice, but I what is the difference between the two concepts? It seems to me I only need Calendars? Also, CalendarList doesn't seem to work, trying to insert a Calendar returned a 404 error.</p>