Use first broadcast as well as current for picks

Items that were broadcast during primetime are of interest,
as well as those that are currently being broadcast in
primetime. This will catch repeats of popular shows that
may be available on-demand.
Merge pull request #462 from atlasapi/pick-first-broadcast

Use first broadcast as well as current for picks
Log errors
Dedupe queried URIs
Remove series/episodes numbers of removed from PA feed

We need to set episode/series numbers to null if they're
not present in the PA feed, rather than do nothing.
Merge pull request #463 from atlasapi/removed-series-episode-numbers

Remove series/episodes numbers of removed from PA feed
Acknowledge messaging.enabled in EquivModule
Merge branch 'equiv-messaging-switch' into stage

* equiv-messaging-switch:
  Acknowledge messaging.enabled in EquivModule
  Remove series/episodes numbers of removed from PA feed
  Dedupe queried URIs
  Log errors
  Use first broadcast as well as current for picks