Validate service and player IDs when persisting
Merge pull request #166 from atlasapi/five-service-player

Validate service and player IDs on save
Add debugging info to help when schedules overlap
Remove logging of no-write operations

We're seeing heavy oplog load. Until we do a mini-refactor of this
class with some batching, we'll disable the logging of operations
that don't result in a write, due to hash codes not changing.
ChannelGroupStore changes for marker channel groups

Add caching implementation, add query by uri for channel groups
Persistence of audience stats and ratings
Merge pull request #167 from atlasapi/mbst-9152-audience-data

Persistence of audience stats and ratings
Serialise ratings
Merge branch 'master' into stage

Conflicts:
	src/main/java/org/atlasapi/persistence/content/mongo/MongoContentWriter.java