re #678 - Deliver attachments through DispatcherResponseTransportChunked
Merge branch 'master' into hotfix/678-attachments

Conflicts:
	component/attachments/controller/attachment.php
re #678 - Only change the transport if format is explicitly set to file
re #678 - Add missing translation INI files
re #678 - Force download of attachments files in back-end
Merge branch 'hotfix/678-attachments'