migration to remove roll column from user if it exists
migration to remove roll column from user if it exists

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