Fixes undefined this in settings.js
Fixes undefined this in settings.js

Because this and self. Missed it from previous commit :/

JohnONolan/Ghost-Admin,dbalders/Ghost-Admin,TryGhost/Ghost-Admin,airycanon/Ghost-Admin,kevinansfield/Ghost-Admin,acburdine/Ghost-Admin,TryGhost/Ghost-Admin,JohnONolan/Ghost-Admin,dbalders/Ghost-Admin,kevinansfield/Ghost-Admin,acburdine/Ghost-Admin,airycanon/Ghost-Admin