- removed Google+, VKonakte but leaves these custom fields as just URL type with Website URL validation;

- added 2.6.0 version upgrade script for changing 'vk_url', 'google_url', 'googleplus_url' just to 'url' validate value;
- close #1145;

includes/admin/core/packages/2.6.0/hooks.php

@@ -0,0 +1,5 @@
+<?php if ( ! defined( 'ABSPATH' ) ) exit;
+
+return array(
+	'social_fields260' => 'social_fields260',
+);