v0.5: Merge branch '520-media-files-access-fix'
* 520-media-files-access-fix: UK: pep8 cleanup UK: include DigestAuthentication in settings - common.py UK: url for media files UK: media endpoint for formlist api, closes #520
* 520-media-files-access-fix: UK: pep8 cleanup UK: include DigestAuthentication in settings - common.py UK: url for media files UK: media endpoint for formlist api, closes #520