ZP-311 #comment Reminder on event is saved as none in Outlook/Webaccess #time 15m

git-svn-id: https://z-push.org/svn/z-push/trunk@1550 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5

src/backend/zarafa/mapiprovider.php

@@ -1027,7 +1027,7 @@ class MAPIProvider {
         $props[$appointmentprops["sideeffects"]] = 369;
 
 
-        if(isset($appointment->reminder) && $appointment->reminder > 0) {
+        if(isset($appointment->reminder) && $appointment->reminder >= 0) {
             // Set 'flagdueby' to correct value (start - reminderminutes)
             $props[$appointmentprops["flagdueby"]] = $appointment->starttime - $appointment->reminder * 60;
             $props[$appointmentprops["remindertime"]] = $appointment->reminder;