added instruction for cron

fixed typo in run.py

minor typo in changeImage

fixed final bugs to complete the lab

fixed pathing errors in emails and report_email

fixed run.py errors

fixed supplier_image_upload.py small bugs

fixed errors in changeImage.py

finished the tests in health check

added disk_space_check

cpu_check added

added email_warning in healthcheck.py

finished the module needed for the generate pdf email task

finished email protocols

added email functions