I can upload .txt, .csv and .xlsx files into the DAM, but then when
editing a page, I can only find the xlsx file in the Asset Finder (left
panel). I suspect this issue is around the mimetype. The files not
displaying have a mimetype of text/plain and text/csv. The xlsx, which
does show up, has a filetype of
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet. What
do I need to do for text/* mimetypes to show up in the Asset Finder?
(The reason I want to upload a csv file in partic...