More subuser Model updates.

app/Models/Permission.php

@@ -28,6 +28,14 @@ use Illuminate\Database\Eloquent\Model;
 
 class Permission extends Model
 {
+
+    /**
+     * Should timestamps be used on this model.
+     *
+     * @var boolean
+     */
+    public $timestamps = false;
+
     /**
      * The table associated with the model.
      *