Fix: #722 - run the delete at statup (#726)

Author: KevinJump

uSync.BackOffice/Services/SyncService.cs

@@ -258,6 +258,9 @@ public async Task<IEnumerable<uSyncAction>> ImportAsync(string[] folders, bool f
 
             }
 
+            // run the post actions (deletes) as part of the startup import methods. 
+            var results = await SyncService.PerformPostImportAsync(handlers, actions);
+
             // fire complete
             await _mutexService.FireBulkCompleteAsync(new uSyncImportCompletedNotification(actions));