update amendments in tables.sql to include job_id in entry_ammendment
added amend.py to move amendment-related code into its own file
when we create a job (NewJob) and that job matches an amendmentType (via job_name or job_name:amt <- where amt relates to how we do a transform_image), then
we enter a new EntryAmendment
pa_job_mgr knows when a Transform job ends, and removes relevant EntryAmendment
files*.js use EntryAmendment data to render thumbnails with relevant AmendmentType and
if a normal page load (like /files_ip), and there is an EntryAmendment, mark
up the thumb, run the check jobs to look for completion of the job, removeal
of the EntryAmendment and update the entry based on 'transformed' image
OVERALL: this is a functioning version that uses EntryAmendments and can handle
loading a new page with outstanding amendments and 'deals' with it. This is a
good base, but does not cater for remove_files or move_files
