Translated nFeed custom fields are not being exported.

To reproduce the error:

• Install nFeed
• Create a nFeed custom Field
• Configure the nFeed custom field
• Translate that field in German
• Create a template that exports that custom field (Use the custom field name in English)
• Export the template with your Jira language in English
• Export the template with you Jira language in German (The result will be empty)