Update YouView output to use ASINs for all ids. Any content without an ASIN is ignored when uploading.
When fetching the brand for a episode, don't assume that the container will always be a brand.
when fetching the series for an episode, check both the seriesref and container, and don't assume
that the resolved content is a series.
Ensure YouView LoveFilm Bootstrap exits if the task is cancelled, by checking before each chunk is processed.
Merge pull request #58 from atlasapi/mbst-5179-ingest-lovefilm-aliases

use ASINs for all ids on Lovefilm content upon output to YouView.