Safely evaluate parents and path for orphan nodes.

[edlebert]

It's possible for Cuprite to evaluate the parents or the path for a node that no longer belongs to the document.

[route]

@edlebert could you describe scenario when it is possible? Looks like also there'a at least one failing test in all builds

[route]

I'll try to rebase and see if it's useful, didn't hear from you ;)

[edlebert]

Thank you! Yes, it definitely is an issue. It can happen for "waiting" Capybara code such as expect(page).to have_text 'Some Text' when the DOM can change during evaluation.

[Mifrill]

okay, we have only one fail test after the merge with the updated master. Not bad! I will take a look, it is also nice to have some tests with the scenario