OR-559 Add bytes filter
OR-559 Attachment directives
OR-559 Display attachments as widgets
OR-559 esn.file tests
OR-559 esn.file tests
OR-559 Message attachment directive tests
Merge pull request #426 in OR/rse from OR/rse-chamerling:OR-559-display-attachments to master

* commit 'ac703302dd19da58afb0304e31dab7acfd9f8a21':
  OR-559 Message attachment directive tests
  OR-559 esn.file tests
  OR-559 esn.file tests
  OR-559 Display attachments as widgets
  OR-559 Attachment directives
  OR-559 Add bytes filter