Added unit test around "forbidden section" redirection
Added unit test around "forbidden section" redirection

See https://github.com/silverstripe/silverstripe-subsites/pull/115

silverstripe/silverstripe-subsites,wernerkrauss/silverstripe-subsites,mikenz/silverstripe-simplesubsites,silverstripe/silverstripe-subsites,danaenz/silverstripe-subsites,mandrew/silverstripe-subsites,mandrew/silverstripe-subsites,dnadesign/silverstripe-subsites,danaenz/silverstripe-subsites,mikenz/silverstripe-simplesubsites,wernerkrauss/silverstripe-subsites,dnadesign/silverstripe-subsites