ZP-451 #comment normalize SyncParameters after unserializing, save SyncParameters if updated and not invalidaded when replying with empty response in Sync, do not update FolderSyncRemaining counter with 0 if it's not set or already zero (prevent unecessary state update)


git-svn-id: https://z-push.org/svn/z-push/trunk@1952 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5