Duplicated assignee option when selecting a category with default assignee
1. Go to a project with a default category assignee
2. Go to new issue page
3. Select the category with the default assignee
4. Open the Assignee dropdown
5. Observe that the default category assignee is duplicated in the dropdown.
The issue is generated by the line source:trunk/app/views/issues/new.js.erb#L6