Partly revert recent changes removing #imports and #includes, under OpenChange, as they cause more problems than they solve.

OpenChange/MAPIStoreAppointmentWrapper.h

@@ -23,8 +23,11 @@
 #ifndef MAPISTORECALENDARWRAPPER_H
 #define MAPISTORECALENDARWRAPPER_H
 
+#import <NGCards/iCalPerson.h>
+#import <NGCards/iCalTimeZone.h>
 #import <Appointments/iCalEntityObject+SOGo.h>
 
+#import "MAPIStoreObjectProxy.h"
 
 @class NSTimeZone;