Next week, LG will unveil new televisions running webOS, the ill-fated operating system it acquired in last February. Although LG is expected to retain some form of webOS’ interface, exactly what that will mean on a television instead of a phone or tablet is still a mystery. If LG has any luck at all, it will be more successful than the last consumer webOS products. It’s been over two years since HP’s TouchPad and the Pre 3 were released and then discontinued in a surprise decision from then-CEO...