Fixes #559 - Opening links with a blank target (#565)
Fixes #559 - Opening links with a blank target (#565)


mozilla-mobile/focus-ios,justindarc/focus,mozilla-mobile/focus-ios,mozilla-mobile/focus,mozilla-mobile/focus,mozilla-mobile/focus,mozilla-mobile/focus-ios,justindarc/focus,mozilla-mobile/focus,mozilla-mobile/focus,justindarc/focus,mozilla/focus,mozilla-mobile/focus,justindarc/focus,mozilla/focus,mozilla-mobile/focus-ios,mozilla-mobile/focus-ios,justindarc/focus,mozilla-mobile/focus-ios,mozilla/focus,mozilla/focus,mozilla/focus,justindarc/focus