#367267: Reverting line needed for multigroup support, since it breaks groups until the multigroup patch is applied.

#397578: Uncouple ImageField from custom FileField hooks. Implement ImageField as a dependent widget for FileField.

#387194: Major FileField UI Refactoring. Putting File info side-by-side the preview, hiding fields that are unnecessary before uploading a file.

#303286 by dopry, drewish, moonshine, Add field to file during validation so it is available during hook_file_insert.

#291383 by webchick, hook_file_download() causes 404 for filefield-derived fields on private download

#295620, Call to undefined function field_file_load().. decided to include field_file.inc at a global level.

#310698 by dopry, update the default value callback to only display a single extra filefield by default. There are still upstream issues with cck, see http://drupal.org/node/320313#comment-1083296

reset item to default value when remove is selected instead of just changing fid to 0 so description field gets erased.

dodge devel.module errors... I still really hate that I can't send the application/javascript content type..
I'm gonna track that bug down one day.

#286834 by quicksketch and dopry, so AHAH was in place... If you're using ahah make sure your wrapper id exists,
otherwise stuff can be a real mess. Also the jQuery form plugin does file submission in an iFrame and you can't
trust the post in the network console. I had to put the ahah wrapper in #prefix/#suffix and they have to be
overridden in the JS callback to prevent duplicate div wrappers appearing... I kind of wish ahah replaced it's
wrapper rather than  inserting inside the wrapper. ce la vie. but here is working JS upload and remove.