Added a new directive for listing tracks used in the stream, favorites,
tracks and profile-view. Also added a link from the username to the
profile of this user.
Moved the template tracks.html to view/partials/
Merge pull request #136 from joellundell/tracksdirective

[Improvement] #135 [Feature] #131
Merge pull request #137 from Soundnode/develop

Code refactoring on tracks by @johannessjoberg