Filter programmes on adult channels

If a programme has been broadcast on an adult channel then
it and its brand should not be indexed.
Merge pull request #23 from atlasapi/filter-programmes-broadcast-on-adult-channels

Filter programmes on adult channels
Update tests to include ChannelResolver
Debug endpoint to see indexed document
Merge pull request #24 from atlasapi/debug-document

Debug endpoint to see indexed document
Add /index endpoint
Merge pull request #25 from atlasapi/index-endpoint

Add /index endpoint
start the channel cache during initialisation
Merge pull request #26 from atlasapi/index-endpoint

start the channel cache during initialisation
Reload index after single doc is indexed
Merge branch 'master' into stage