Use DESCRIPTION file for bundles (SCHEMA CHANGE) * Added two new fields to the Bundle model: * octave_format, which allows users to specify if their bundle has been formatted according to octave packaging standards or not * description_file, which points to a file named DESCRIPTION in the root directory (or the next top-level directory), if the octave_format checkbox is ticked and if one exists * Fixed the uploader field for form by making it a hidden input and preventing hidden inputs from showing up entirely