Open song/artist page by clicking on a song/artist title in the player.

[mradionov]

Allows to open song page by clicking on it's title or logo in the player and to open artist page by clicking on his name in the player. It is available on the SC website and I think is useful.

Basically I've added one more property to a track object, which is getting created by playerService - songUserId - using API data from tracks.html and playlists.html.

Also I've used ng-click approach because from my research data for player is added in real-time via DOM API from playerService (like appending track name and inserting logo), so just appending ui-sref the same way won't work. I wonder though if I should have added a method to playerService to get current track object instead of accessing queueService directly from a controller.

[weblancaster]

@mradionov looks good this way.. thanks for working on it and sorry for my delay in review.