Sync between a read only Exchange and a CalDav server, anonymizing the actual appointments by reducing them to a time frame and a dummy name.

Andreas Schneider e3288f9848 Added hashing of EWS calendar item IDs		2018-04-01 16:19:20 +02:00
src/calanonsync	Added hashing of EWS calendar item IDs	2018-04-01 16:19:20 +02:00