[Merge] lp:~fboucault/webbrowser-app/background_open_tabs_adjacent into lp:webbrowser-app/staging

[Olivier Tilloy]

I just observed that in chromium on desktop, when closing a tab that had been opened from another tab, the parent tab becomes current again, whereas in webbrowser-app the tab to the right of the one being closed becomes current. Maybe not something we want to address in this branch, but it would be a nice improvement to build on top of this branch.
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https://code.launchpad.net/~fboucault/webbrowser-app/background_open_tabs_adjacent/+merge/316226
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