Merge pull request #96 from atlasapi/mbst-6848-pa-new-episode-flag

Persist newEpisode field on Broadcast.
Enqueue messages for each change of content
Enqueue message for each change of topic
Enqueue messages for equiv updates
Merge branch 'mbst-5423-queue-changes' into stage

* mbst-5423-queue-changes:
  Enqueue messages for equiv updates
  Enqueue message for each change of topic
  Enqueue messages for each change of content

Conflicts:
	src/main/java/org/atlasapi/messaging/AtlasMessagingModule.java
	src/main/java/org/atlasapi/persistence/MongoContentPersistenceModule.java
	src/main/java/org/atlasapi/persistence/content/EquivalenceWritingContentWriter.java