Correc the CSS class for email field
Fixed Error with cloning select_advanced fields

`select_advanced` fields are now fullt cloneable.  Also replaced
`delegate` with `on` since `delegate` is deprecated in jQuery
Removed delegate from event handlers
Included ID in rwmb_file_info and rwmb_image_info
Merge pull request #255 from funkedgeek/master

Fixed `select_advanced` cloning issue
Merge pull request #256 from paulobarcelos/master

Exposed ID in rwmb_file_info and rwmb_image_info