silverstripe/silverstripe-framework — pull request #2166 by dhensby (2013-06-29 10:56:47+00:00)
Title: FormFields now allow setting of extra CSSClasses en masse

Each CSS class passed in to `addExtraClass` or `removeExtraClass` will be set as their own key in the `extraClasses` array

Also make `Form` consistent with `FormField`