Users can add publications to journalists & see data on journalist index

Trello: https://trello.com/c/DAoRbGYz/50-journalists-have-publications

The user feature of "adding publications to journalists" includes being being able to view the associated data when viewing the journalist.

I recognize the Journalist model is approaching "fat" and could possibly be refactored in the future.
Use 2 (not 4) spaces for indentation.<br>Redundant `self` detected.