VE-1448: Focus widget can target nodes

To test this, please see the comment in Jira: https://wikia-inc.atlassian.net/browse/VE-1448
If the calculation for uniqueLayoutId was common between the two layout methods, I would agree, but since they're specific to the type of layout that is being requested, I moved it into these methods. 

I don't quite understand your suggestion so let's chat in person next week. I'll leave this PR for now and will work on other tasks.