Force decoupled tabs

[makmic]

he implementaiton of I open a new tab` currently looks like this:

  page.execute_script "window.open('#{relative_target_path}', '_blank')"

I recently debugged a failing test to this very step, as the newly opened tab was somehow "connected" to the previous tab (chrome only).
Changing the code fixed the issue for me:

  page.execute_script "window.open('#{relative_target_path}', '_blank', 'noopener')"

Opening a window of the same domain with window.open seems to be the same as middle-clicking the refresh button (thus cloning the session). I think this is never intended when using this step. I'd suggest simply adding the 'noopener' attribute.