Add migration to tag Cloudlog as version 2.6.21

Introduces migration 203 to update the application version to 2.6.21 and reset the version info dialog confirmation. Updates migration config to set the latest migration version.

application/config/migration.php

@@ -22,7 +22,7 @@ $config['migration_enabled'] = TRUE;
 |
 */
 
-$config['migration_version'] = 202;
+$config['migration_version'] = 203;
 
 /*
 |--------------------------------------------------------------------------

application/migrations/203_tag_2_6_21.php

@@ -0,0 +1,30 @@
+<?php
+
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/*
+*   Tag Cloudlog as 2.6.21
+*/
+
+class Migration_tag_2_6_21 extends CI_Migration {
+
+    public function up()
+    {
+
+        // Tag Cloudlog 2.6.21
+        $this->db->where('option_name', 'version');
+        $this->db->update('options', array('option_value' => '2.6.21'));
+
+        // Trigger Version Info Dialog
+        $this->db->where('option_type', 'version_dialog');
+        $this->db->where('option_name', 'confirmed');
+        $this->db->update('user_options', array('option_value' => 'false'));
+
+    }
+
+    public function down()
+    {
+        $this->db->where('option_name', 'version');
+        $this->db->update('options', array('option_value' => '2.6.20'));
+    }
+}