Organize logos in sponsor download file

Per the RFP:

    web_logos/ 
          platinum/ 
              company_name1/
                  file_name 
              company_name2/
                  file_name 
          gold/
              company_name3/
                  file_name
              company_name4/
                  file_name 
        ...
    print_logos/ 
        (same)