Gravity Perks File Upload Pro 1.3.17

Added data-file-type and data-file-ext attributes to each file to enable more specific CSS targeting.
Fixed PHP warning that could occur if Single File Upload fields are present in a form.
Added support for rehydrating File Upload Pro fields connected to Gravity Forms User Registration update feeds.

Fixed issue where the "replacingFile" code flag on the Plupload instance would not be removed after a file had been replaced.

Updated TIFFs to be treated as regular files since most browsers cannot render them nor convert to another format.