Make Xorm log configurable (#174)

* make xorm log configable

* bug fixed for other sub commands except web

* rebase and fix xorm log

* bug fix for TrimSpace

cmd/admin.go

@@ -74,6 +74,8 @@ func runCreateUser(c *cli.Context) error {
 
 	setting.NewContext()
 	models.LoadConfigs()
+
+	setting.NewXORMLogService(false)
 	if err := models.SetEngine(); err != nil {
 		return fmt.Errorf("models.SetEngine: %v", err)
 	}