silverstripe/silverstripe-framework — pull request #3437 by dhensby (2014-08-26 10:16:57+00:00)
Title: Set the stage reading mode in `LeftAndMain`

`LeftAndMain` is used as the foundation of the CMS.

All edits in the CMS should really be against the stage version of a `DataObject` otherwise there becomes inconsistencies (see https://github.com/silverstripe/silverstripe-cms/issues/1094)