Update [cxl MediaUploader shortcode] to use mobile friendly html5 uploader and the new cxl API
NOTE: Requires WP 4.0 or greater!!

git-svn-id: https://plugins.svn.wordpress.org/einnov8-wp-xml-rpc-notifier/trunk@1009228 b8457f37-d9ea-0310-8a92-e5e31aec5664