API CHANGE Removed CMSMain_right.ss template, moved one level up to LeftAndMain_right.ss to be inheritable by other LeftAndMain subclasses
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/cms/trunk@92692 467b73ca-7a2a-4603-9d3b-597d59a354a9