OBMFULL-6103 Subtract lastSync by conf.transaction-timeout between CalendarBinding and EventHandler. It only concerns getSync and it's the only path before serializing the EventChanges then send it back to the client
OBMFULL-6103 Do the same thing for AddressBookBinding (lastsync - transactionTimeout)
OBMFULL-6136 Faster device deletion (OBMFULL-6107 frontport)