Debug handling of filenames for external content.
NFC versus NFD normalization of filenames on filesystem : try both when looking for an external file.
remove noisy debug output
Merge branch 'store-step-content-in-file' into content-in-external-file-release

* store-step-content-in-file:
  remove noisy debug output
  NFC versus NFD normalization of filenames on filesystem : try both when looking for an external file.
  Debug handling of filenames for external content.