Bug 804656: add rolluponmousewheel attribute to allow mousewheel events to hide panels, r=enndeakin
Back out baa055cb9043 (bug 834525) for robocop bustage

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extra : rebase_source : 8972732b87274e1c657aa86fa798224895d512fe
Back out ab76caba70f3 (bug 833546) for robocop bustage

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extra : rebase_source : 95fd538d507c63c80a2f9e565f1583c68593b837