Bug 1077404 - subviewradio elements in panic button panel are elliptical and labels get borders, r=jaws

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extra : rebase_source : 1ad491b0097e76aa3933163d554c146889a81256
Bug 1050638 - should be able to close tab with onbeforeunload warning if clicking close a second time, r=ttaubert

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extra : rebase_source : 2290f2d27e57cf3281d2884442e54e9c29e0e4e8