new Broadcast fields
ComparisonChain for broadcast
Ordering instead of if null chain
Merge pull request #227 from atlasapi/ota-equiv

ota-equiv
Rename 'withGenre' to 'addGenre' to better express intent of method
Merge pull request #226 from atlasapi/mbst-9629-channel-genres

Add genres to channels
Add event groups to organisations
Merge branch 'organisations-endpoint' into stage

Conflicts:
	src/main/java/org/atlasapi/media/entity/simple/Broadcast.java