zendesk/attachment_viewer_app — pull request #14 by adammw (2014-11-13 01:09:28+00:00)
Title: [OFFAPPS-330] Fix extensionless attachments

:koala: :bug:

Fix extensionless attachments

/cc @zendesk/quokka

### References
- Jira link: https://zendesk.atlassian.net/browse/OFFAPPS-330

### Risks
- None