OO-2019: fix date formatter for recurring id, set the recurrence until date at the end of the day like iCal

OO-2339: fix issue with caching during import, remove the forum key and other properties the same way by import and copy of wiki

 OO-2347: surround the sort by catch and don't operate on the class variable until manipulation is done

OO-2212: send 403 if the request to mapper /m/ has not a valid session id, this is a workaround for iOS 10 video bug