Move MobileDetect library to vendor

- Bumped the version to 2.8.25 (from 2.8.11)

vendor/mobiledetect/mobiledetectlib/namespaced/Detection/MobileDetect.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * Little piece of PHP to make Mobile_Detect auto-loadable in PSR-0 compatible PHP autoloaders like
+ * the Symfony Universal ClassLoader by Fabien Potencier. Since PSR-0 handles an underscore in
+ * classnames (on the filesystem) as a slash, "Mobile_Detect.php" autoloaders will try to convert
+ * the classname and path to "Mobile\Detect.php". This script will ensure autoloading with:
+ *  - Namespace:       Detection
+ *  - Classname:       MobileDetect
+ *  - Namespased:      \Detection\MobileDetect
+ *  - Autoload path:   ./namespaced
+ *  - Converted path:  ./namespaced/Detection/MobileDetect.php
+ *
+ * Don't forget to use MobileDetect (instead of Mobile_Detect) as class in code when autoloading.
+ *
+ * Thanks to @WietseWind.
+ * For details please check: https://github.com/serbanghita/Mobile-Detect/pull/120
+ */
+
+namespace Detection;
+require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'Mobile_Detect.php';
+
+class MobileDetect extends \Mobile_Detect {}