BUGFIX Storing HTTP "Referer" header from $_SERVER in Director::direct() and passing it along in Director::test()
ENHANCEMENT Storing a "fake referer" in TestSession->lastURL to allow for redirectBack() calls, e.g. after failed form validation
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@64229 467b73ca-7a2a-4603-9d3b-597d59a354a9