seed settings

src/migrations/m160624_011345_settings.php

+<?php
+
+use yii\db\Migration;
+
+class m160624_011345_settings extends Migration
+{
+    public function up()
+    {
+        Yii::$app->settings->set('availablePhpClasses', '{"hrzg\\\widget\\\widgets\\\TwigTemplate": "Twig layout"}', 'widgets', 'object');
+
+        return true;
+    }
+
+    public function down()
+    {
+        Yii::$app->settings->delete('availablePhpClasses', 'widgets');
+
+        return true;
+    }
+
+}