this sample app reproduces 'OS8: UITableViewHeaderFooterView contentView requiring positive height/width causes unsatisfiable constraints' (rdar://18362327, http://openradar.appspot.com/radar?id=5759949367934976)
this sample app reproduces 'OS8: UITableViewHeaderFooterView contentView requiring positive height/width causes unsatisfiable constraints' (rdar://18362327, http://openradar.appspot.com/radar?id=5759949367934976)