filefield 5.x-2.3-rc2

The FileField 2.3 Release Candidate 2.

This release:

@features:

• Remove the "Show 'List' option" widget setting, and replace it by an "Always list files" field setting (= !$show_list). Requires an update.php run to keep the old settings.
• You can now leave extensions blank to turn of extension validation.
• mime_detect dependency for more consistent server side mime detection.
• client side extension validation using the accept property of input[@file] and a little js hackery.
• added filefield_meta for automatically detecting file metadata using hook_filefield.
• permission handling has changed. In order for filefield, imagefield, and upload.module to place nice a user must have permissions to view files for all the modules.
• add not null views filter.
• added french and swedish translations.

@bugs:

• Fix suboptimal usage of t(): Placeholders are better than string concatenations.
• Replace the "" string with an l() call.
• Follow-up on #177638: always show files if "List" is hidden.
• Fixed hook_filefield op == prepare implementation.
• #180479, fix that silly create directory on validation issue for tokens now that we create the dir every time the file is uploaded.
• #167207 by jpetso, Description is not updated when uploading a new file (without multiple values)