Make google play music work independent of the locale

[derflocki]

Some, maybe all controls are currently looked up in the DOM via their aria-label: $('[aria-label="Pause"]' $('[aria-label="Play"]', however there are locale dependent.

I have begun working on this in https://github.com/derflocki/browser-playerctl/tree/issue-7-make-google-play-music-work-independent-of-the-locale