Double handling of media keys

[PeterMinin]

If a site implements its own media keys handling, both handlers are invoked and the key is processed twice. For the Play/Pause key it means that the music is paused and immediately resumed. An example of such a site is radio.yandex.ru. I think there should be an option in the controllers to disable media keys handling.

[msfeldstein]

This is a good idea that i've been kicking around but it sounds like its actually needed now. I did it for youtube specifically, but it would be good to have a full config for all.