Fix handling of attendees when updating an event

UI/WebServerResources/js/Scheduler/Component.service.js

@@ -841,7 +841,7 @@
               name: ref.c_cn,
               email: ref.$preferredEmail(),
               role: 'req-participant',
-              status: 'needs-action',
+              partstat: 'needs-action',
               uid: ref.c_uid
             };
             if (!_.find(_this.attendees, function(o) {
@@ -864,7 +864,7 @@
           name: card.c_cn,
           email: card.$preferredEmail(),
           role: 'req-participant',
-          status: 'needs-action',
+          partstat: 'needs-action',
           uid: card.c_uid
         };
         if (!_.find(this.attendees, function(o) {