biocore/qiita — pull request #653 by ElDeveloper (2014-11-20 19:59:21+00:00)
Title: BUG: Show error message with duplicated headers

`QiitaDBDuplicateHeaderError` was not being caught and thus was showing a 500
response to the user, this has been fixed to catch the exception, and to format
the name of the duplicated headers into the error message.

See #648