WP Media Folder - JoomUnited 5.9.12

* Fix : Sync server folder
* Fix : Gallery Youtube lightbox

* Add : Generate thumbnail option for cloud image
* Add : Improve NextGEN galleries importer
* Fix : Custom order file not work when Smush plugin active
* Fix : Load slider theme
* Fix : Gallery settings tooltip
* Fix : Add loader for cloud image
* Fix : Slow site when have many galleries on builder
* Fix : Watermark render

* Fix : Amazon S3 tooltip info don't show on Media Library
* Fix : Embed pdf from cloud
* Fix : Import FTP with Japanese language
* Fix : Open PDF from gallery