Address PR feedback
Address PR feedback

Fixes eslint issues, and uses the more general '.Player' selector for
playerSelector, as the other selectors were not displayed on all
players.

carpet-berlin/web-scrobbler,galeksandrp/web-scrobbler,inverse/web-scrobbler,inverse/web-scrobbler,fakelbst/Chrome-Last.fm-Scrobbler,alexesprit/web-scrobbler,alexesprit/web-scrobbler,galeksandrp/web-scrobbler,david-sabata/web-scrobbler,david-sabata/web-scrobbler,carpet-berlin/web-scrobbler,fakelbst/Chrome-Last.fm-Scrobbler