Import message labels.

[dafeder]

The import queue job actually creates two result objects, one for the ResourceLocalizer and one for the actual Import. The messages displayed from drush when running the queue report these both as "Import... completed."

QA Steps

• Create a dataset with a CSV resource
• Run drush cron and confirm resource is imported
• Modify resource by incrementing the updated date (make sure updated is marked as a trigger in DKAN settings)
• Run drush cron
• Confirm that you get two unique messages for the import status rather than two identical "Import completed" messages