use correct message severity when synchronizing

src/keepass2android-app/SyncUtil.cs

@@ -56,7 +56,7 @@ namespace keepass2android
             OnFinish onFinish = new ActionOnFinish(_activity, (success, message, activity) =>
             {
                 if (!String.IsNullOrEmpty(message))
-                    App.Kp2a.ShowMessage(activity, message,  MessageSeverity.Error);
+                    App.Kp2a.ShowMessage(activity, message,  success ? MessageSeverity.Info : MessageSeverity.Error);
 
                 // Tell the adapter to refresh it's list
                 BaseAdapter adapter = (activity as GroupBaseActivity)?.ListAdapter;