Add additional fields from TheTVDB service.

- Added additional fields to Series and Episode
- Moved images from Series to child table
Add test images.
Remove attributed removed from domain.
Add Image domain model and update TheTvDbApiService to use image.
Add image endpoints and make them accessible by all.
Add new UI and front page.
Add initial series view pages and controllers.
New navigation and UI.
Fix spacing.
Add some null checks.
Add endpoint for importing single series by TheTbDB ids.
Add rating attribute from theTvDB
Add filter of valid external release to save.
Make contentType DRY.
Add TODO comments.
Merge pull request #14 from dbpatel219/feature/new-gUIrl

Feature/new g u irl