Merge pull request #84 from atlasapi/mbst-5687-ingest-channel-simulcast-urls

Persist the related links added to channels
Merge pull request #86 from atlasapi/mbst-4778-people-equivalence

MBST-4778 People Equivalence
fix IdSettingPersonStoreTest passing null not Optional.absent
Mongo collection for equivalence writing should read only primary

Configure the `MongoLookupEntryStore` passed to the
`EquivalenceWritingContentWriter` with a mongo collection which will
only read from the *primary* replica.

This avoids a race in the front-end when POSTing Content where a
LookupEntry for the new content is written to the primary but when
recording its equivalence a read from the secondary for that LookupEntry
returns nothing as the replica is (even slightly) out of sync.
format MongoContentPersistenceModule
Update ids in CrewMembers when writing their Person
Merge pull request #85 from atlasapi/mbst-6047-people-ids

Update ids in CrewMembers when writing their Person
Merge pull request #87 from atlasapi/mbst-6311-post-read-consistency

Mongo collection for equivalence writing should read only primary
Don't create/update a prototype person if the person already exists in
the database, since that action will remove existing content references.
Merge pull request #88 from atlasapi/dont-overwrite-people

Maintain references and equivalences of existing people when updating.
Add full Image support to channels.
 - Refactor persistence of temporal fields - move persistence methods from Channel/ChannelGroupTranslators
to the TemporalTitle/ImageTranslator
- Clean up imports on several tests
Move AstyanaxContext creation to CassandraPersistenceModule, and move cluster/keyspace properties
to environment properties instead of hardcoded constants file. N.B. the tests still have hardcoded
properties, these will need migrating to environment properties at some point.
Write new fleshed-out images to a new field, called 'new_images'. write previous data
to 'images'.
Merge branch 'mbst-5686-ingest-pa-channel-logos' into stage

Conflicts:
	src/main/java/org/atlasapi/media/channel/ChannelTranslator.java
	src/main/java/org/atlasapi/persistence/MongoContentPersistenceModule.java
	src/main/java/org/atlasapi/persistence/cassandra/CassandraSchema.java
	src/test/java/org/atlasapi/persistence/content/mongo/MongoPersonStoreTest.java