Fixup: tidy up generated JavaScript
Fixup: tidy up generated JavaScript

Remove unnecessary return statements and other CoffeeScript sillyness

soupmatt/rails_admin,zambot/rails_admin,sferik/rails_admin,dalpo/rails_admin,zambot/rails_admin,widgetworks/rails_admin,widgetworks/rails_admin,dalpo/rails_admin,widgetworks/rails_admin,zambot/rails_admin,soupmatt/rails_admin,sferik/rails_admin,soupmatt/rails_admin,dalpo/rails_admin,sferik/rails_admin