more global config ref cleanup (#7802)

app/email_batching.go

@@ -72,8 +72,8 @@ func (job *EmailBatchingJob) Start() {
 		task.Cancel()
 	}
 
-	l4g.Debug(utils.T("api.email_batching.start.starting"), *utils.Cfg.EmailSettings.EmailBatchingInterval)
-	model.CreateRecurringTask(EMAIL_BATCHING_TASK_NAME, job.CheckPendingEmails, time.Duration(*utils.Cfg.EmailSettings.EmailBatchingInterval)*time.Second)
+	l4g.Debug(utils.T("api.email_batching.start.starting"), *job.app.Config().EmailSettings.EmailBatchingInterval)
+	model.CreateRecurringTask(EMAIL_BATCHING_TASK_NAME, job.CheckPendingEmails, time.Duration(*job.app.Config().EmailSettings.EmailBatchingInterval)*time.Second)
 }
 
 func (job *EmailBatchingJob) Add(user *model.User, post *model.Post, team *model.Team) bool {