Since we are allowing the plugin's  files/css/ stylesheets to be customizable, there is the chance they can get wrecked by a journal admin. If they accidentally or intentionally toast the /css files, returning to the settings form will reestablish them. So this covers both the initial install (journal admin needs to come to settings form at least once to tune the plugin), and as well as a later, simple "self heal" by visiting the settings form again.  Seemed easy and without repercussions to do it this way.