cappuccino/cappuccino — pull request #1567 by Kentzo (2012-06-19 16:17:25+00:00)
Title: Fix container view of CPWindowController

Container view is useful, when a window is designed to handle different views (tabs).

Container view is responsible for laying out its views.
Container view is a content view of the window.
If there is no container view, view controller's view is a content view of the window.