add ticket original end and original price

add helper links to related object in admin

console/migrations/m170902_211224_add_column_original_expiration_date_and_price.php

@@ -0,0 +1,29 @@
+<?php
+
+use yii\db\Schema;
+use yii\db\Migration;
+
+class m170902_211224_add_column_original_expiration_date_and_price extends Migration
+{
+    public function up()
+    {
+        $this->addColumn("ticket", "original_end","datetime DEFAULT NULL");
+    }
+
+    public function down()
+    {
+        echo "m170902_211224_add_column_original_expiration_date_and_price cannot be reverted.\n";
+
+    }
+
+    /*
+    // Use safeUp/safeDown to run migration code within a transaction
+    public function safeUp()
+    {
+    }
+
+    public function safeDown()
+    {
+    }
+    */
+}