Modify Attachments Meta

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When embedding a file/image/video/something to a page, or you try to edit them in the Library, you’ll be allowed to make changes on some meta data. Currently timestamp for uploading of the file and menu order are configurable, although they are still not well validated for wrong input. TODO Metabox like shown here: http://wpsnipp.com/index.php/functions-php/start-date-end-date-metabox-for-events-custom-post-types/; Changing file name of the attachment (without the extension, of course); Control over which user roles can edit these fields; Validation error messages should be displayed; Use anonymous functions, instead of worrying what’ll happen if a function is defined by someone else; If a user types invalid input, they should be warned. Currently nothing happens – attachment is updated without updating with the wrong data. As I’m lazy as hell, I’ll need your help to think of new features to implement! Contributors are welcome on GitHub: https://github.com/vlood/modify-attachments-meta