MINOR: Replaced usage of renamed classes with the new namespaced name.
From: Andrew Short <andrewjshort@gmail.com>
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@90075 467b73ca-7a2a-4603-9d3b-597d59a354a9
BUGIFX Changed ErrorPage->publish() to doPublish->doPublish() - the publication of static HTML into the /assets directory was lagging one version behind the actual published content
BUGFIX Fixed wrong parameter in ErrorPage::get_static_filepath()
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@75915 467b73ca-7a2a-4603-9d3b-597d59a354a9