"(Official Audio)" fix

(Official Audio) fix, like (Official Video) in title.
added amazon.es

via #170
Update youtube.js

strip crap 'Cover Art' fixed
Merge branch 'patch-1' of https://github.com/lacivert/Chrome-Last.fm-Scrobbler
Merge branch 'patch-2' of https://github.com/lacivert/Chrome-Last.fm-Scrobbler
Merge branch 'patch-3' of https://github.com/lacivert/Chrome-Last.fm-Scrobbler