This fixes and implements many items on the ArtistIndex Page and ArtistDetailPage
* Create ArtistStatistics Core Module and tie into API.
* Create Members Class and tie into ArtistModel and Artist API resource.
* Finish Out Album API resources and pass to ArtistDetailPage.
* Finish Out Track and TrackFile API resources and pass to ArtistDetailPage.
* Lots of UI work on Artist Detail Page to get Albums and Track list working.
* Add Cover and Disc Image Types to MediaCover Class
* Remove AddSeries UI Flow, since we have replaced with AddArtist (Cleanup)
Add Track and TrackFile API Resources, Add Rename Track Resource, Add GetFilesByAlbum function to Media File Service, Add Links to Artist Detail Page, Misc other UI work
