TryGhost/Ghost — pull request #4698 by jaswilli (2014-12-22 01:19:04+00:00)
Title: Run tag add operations in sequence

Closes #4697
- Run tag add operations in sequence instead of in parallel
since generateSlug will hand out duplicate slugs until one of
them is committed to the database.
- Add test.
- Misc cleanup of method parameter names and jshint hints.