MusicStore.Spa changes:
- Added buddy validation provider

Created SimpleMapper in MusicStore.Spa

- Fixed EF mapping config
- Made SimpleMapper to map DTOs to EF objects (and vice-versa)
- Admin screens now return Artist/Genre names when showing Album details

- Unhook grunt/npm/bower from project.json due to long-path issue in KRE build

- Remove unneeded AngularHtmlHelper<T> class