ensure all amheida PDFs are accessible before publication

[paregorios]

governing epic: #408 migrate amheida content from standalone website to the research section of isaw web

General experience suggests that some or all of the PDFs included in the Amheida section are likely not prepared properly for accessibility. The latter condition is a WCAG violation and must be corrected before the Amheida materials can be published.

Steps:

• determine which pdfs need remediation (make a list)
• ask Amheida team to re-generate as many of these as possible from the original source, using accessibility methods
• verify regenerated PDFs meet accessibility guidelines and swap them out through the plone
• arrange mediation of PDFs that cannot be re-generated from source and post the results

[paregorios]

Assigned this to myself to do the first step: make a list of all amheida-related images and whether they need alt text or not.