TV endpoint updated

## More channels added
namely:
* Rúv íþróttir
* Stöð 2 Sport
* Stöð 2 Sport 2
* Stöð 2 Gull
* Stöð 2 Bíó
* Stöð 3
* Skjár 1

## Removed root url
`/tv` removed because it was not working and it is not needed.

## Added integration tests
Integration test for the new channels