Add support for new release/editorial endpoint (not yet public)
Fix test failure
After consulting with search team, we can get results needed for this test
by searching for "rock,pop" not "rock,pop,2000s"
Update the release/editorial endpoint schema

- Remove staff reviews, which isn't actually implemented yet
- Change promotionalText from a string to a TextItem object, so it can be modified easier
Merge pull request #68 from danhaller/reviews

Add support for new release/editorial endpoint (not yet public)
Merge branch 'master' into async_dotnet45

Conflicts:
	src/SevenDigital.Api.Wrapper.Integration.Tests/EndpointTests/TagsEndpoint/ArtistByTagTopTests.cs