BUGFIX Fixed Folder::findOrMake() not to create "new-folder" through File->setName() if using a trailing slash in the path (which causes an empty name). Added FolderTest to verify this.
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/branches/2.4@101266 467b73ca-7a2a-4603-9d3b-597d59a354a9