redirect attachments to folders by course/assignment/student
redirect attachments to folders by course/assignment/student

peterkshultz/gradecraft-development,zqian/gradecraft-development,peterkshultz/gradecraft-development,mkoon/gradecraft-development,UM-USElab/gradecraft-development,UM-USElab/gradecraft-development,zqian/gradecraft-development,mkoon/gradecraft-development,peterkshultz/gradecraft-development,zqian/gradecraft-development,mkoon/gradecraft-development,UM-USElab/gradecraft-development,UM-USElab/gradecraft-development