parent menu items are entitled only if any of their children are entitle...

...d

https://www.pivotaltracker.com/story/show/60679696

Issue: When user has no entitlements, some menu options still appear.  User should only see top menu if a sub-menu is available
Resolution: when all menu items have been rendered and validated, re-validate from the bottom up, such that every parent item checks if any of its children is valid.