Make sure the inbox, outbox, and dropbox get cacheNotifiers so they can invalidate the cache.
Make sure the inbox, outbox, and dropbox get cacheNotifiers so they can invalidate the cache.

git-svn-id: 0c33e958600270102f91bf5868e396345dde476c@2520 e27351fd-9f3e-4f54-a53b-843176b1656c

red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver