corrected image content encoding.
added the application url prefix for include represented image in pdf.
debugging image in pdf.
debug img in pdf.
debugging image in pdf.
debug image in pdf.
updated access to image for pdf gen.
code tidy up.
code tidy up.
Merge remote-tracking branch 'origin/master' into dsc-807-ingest
code tidy up.
Merge pull request #880 from nla/dsc-807-ingest

Dsc 807 ingest